ON GUARD-GARDASIL
Despite vocal opposition from some religious groups
and worried parents, on February 2, 2007, the Republican
governor of Texas, Rick Perry, signed an executive
order requiring all 11- and 12-year-old Texas schoolgirls
to be vaccinated with Gardasil. This is a newly
approved vaccine, manufactured by the pharmaceutical
giant, Merck, Inc. It is designed to prevent infection
with four strains of the human papillomavirus (HPV):
types 6 and 11, which cause genital warts, and types
16 and 18, which are among the 30 or more strains
that are capable of causing cervical cancer.
By signing this executive order, Gov. Perry bypassed
the Texas legislature, and thereby avoided and open
political debate on this controversial issue. Grassroots
opposition in the Texas legislature may yet reverse
this unilateral decision. But as this writing, the
order stands: any girl who wants to enter sixth
grade next September in the Lone Star State will
have to show proof that she has received three Gardasil
injections before school begins.
According to a front-page article in the New York
Times, at least 31 other states are currently debating
bills that would require Gardasil vaccination; appropriate
funds for such vaccination; or require information
on HPV to be distributed to children and their parents.
Eighteen of these states are considering legislative
action mandating Gardasil vaccination. Eventually,
if the drug's advocates have their way, the entire
female population of the US- around 150 million
girls and women-will be compulsorily vaccinated.
Vaccination of the male population may then follow.
HPV is a sexually transmitted virus that is nearly
universal in the human population. Unlike the H5N1
virus that causes avian influenza (bird flu), it
is not a potentially airborne infection that threatens
to tear through our communities, causing disease
and death. It is more of a risk factor for disease
than a disease-causing agent in itself. Why, then,
such an urgent need to vaccinate at least half of
the population? Has there been some unexpected outbreak
of HPV-related illnesses? Why should vaccination
against cervical cancer suddenly be made mandatory?
After all, cervical cancer is not a contagious illness
that can be passed along by casual contact. It is
a slowly progressing disease process, which is readily
preventable by current means, so that no one needs
to die of it.
The main scientific rationale for inoculating
large segments of a susceptible population is to
confer what scientists call “herd immunity.” When
a sufficiently high proportion of an at-risk population
has been inoculated, this confers a degree of resistance
to the spread of the infectious agent, thereby protecting
the whole population by reducing the likelihood
of an epidemic. The effectiveness of herd immunity
depends, among other things, on maintaining a high
vaccination rate in the at-risk population and ensuring
that vaccinations are kept current.
But in the case of HPV, herd immunity cannot be
achieved without also inoculating the entire male
population, since males constitute the primary reservoir
of the virus and are the source of continual re-infection
for females – and also sometimes (in the case of
homosexual males) for infecting one another. In
addition, one would have to inoculate the 50 million
or more people who visit the US each year (tinet.ida.doc.gov),
as well as the 11-12 million illegal immigrants
who are often beyond the reach of the education
system (pewhispanic.org). This is a nearly impossible
task. Therefore, since the acquisition of herd immunity
cannot be a realistic goal, there is no compelling
medical justification for inoculating half the population
with Gardasil.
The goal of eliminating cervical cancer – and
the other illnesses with which these viruses are
associated – is certainly laudable (although in
the case of cervical cancer it is, in fact, attainable
by means other than vaccination). But there remain
many unanswered questions concerning Gardasil, especially
those pertaining to its safety, cost and effectiveness.
In this report I discuss the reasons why I believe
that the precipitous drive to vaccinate every girl
child in America has more to do with generating
profit for Merck, the manufacturer of the vaccine,
rather than with any genuine drive to reduce the
number of women contracting cervical cancer.
First, some facts.
Human papillomavirus (HPV) may be relatively unfamiliar
to most people, but it is actually one of the most
common viruses to affect human beings and is nearly
ubiquitous in the human species. There are more
than 100 different strains and at least 30 of these
are transmitted through sexual activity. The virus
can be spread via sexual intercourse, through any
genital contact between men and women, or through
homosexual activity of either sex.
A February 2007 study from the Centers for Disease
Control and Prevention (CDC) showed that just over
one in four US women aged 14 through 59 are infected
with some form of the human papillomavirus (Dunne
2007). In fact, almost 80 percent of American women
become infected with HPV by the time they reach
50 years of age. This certainly sounds scary. However,
it is crucial to understand that the vast majority
of these infections are with harmless strains and
most women will never experience any symptoms, much
less succumb to cervical cancer or any other serious
disease, as a result of having been exposed to any
strain of this virus.
In fact, although there are more than 20 oncogenic
strains (i.e., strains which have the potential
to cause cancer), few women are actually infected
with these. According to the same February 2007
CDC study just cited, infection with HPV types 6,
11, 16, or 18 (the types prevented by Gardasil)
were detected in just 3.4 percent of the study participants.
Of these four, types 16 and 18 are the most carcinogenic.
But they were found to be relatively rare in the
American population. In fact, the CDC study put
prevalence of each of the four relevant strains
of HPV – 6, 11, 16 and 18 - at under 1.6 percent.
Aside from the two carcinogenic strains against
which Gardasil is designed to be active, HPV strains
31, 33 and 45, and at least 9 others, are also strongly
associated with increased cancer risk. Gardasil
does not claim to protect against these, nor does
it protect against the remaining strains that are
also believed to be associated with cancer.
The so-called ‘viral ecology’ of HPV infection
is also unclear: no one knows whether, by preventing
infection with the two most currently prominent
oncogenic strains, HPV 16 and 18, we may inadvertently
be creating an opportunity for one or more of the
remaining 18 or so oncogenic strains to take up
the slack. The European Medicines Agency report
on Gardasil rather fleetingly mentions that the
incidence of HPV disease due to non- vaccine types
of the virus was 5.5 percent higher overall in the
vaccinated group compared to those receiving placebo
(EMA 2006). This may be an early warning signal
that other strains of HPV (including other carcinogenic
strains) are already moving into the ecological
niche left vacant as HPV 16 and 18 are suppressed.
To reiterate: while HPV is certainly widespread
in the population, the vast majority of people who
contract it, to quote the Centers for Disease Control,
“will not have any symptoms and will clear the infection
on their own” (CDC 2004). In fact, one surprising
finding from the February 2007 CDC study was that
the strains of the virus that are most closely linked
to cervical cancer are found in fewer than one in
30 women.
An infection that almost always causes no symptoms
and clears up on its own is hardly a cause for alarm,
still less for a campaign of mandatory vaccination
aimed at schoolchildren.
For a small minority of American women, however,
HPV infection, left undetected and untreated, may
cause a number of illnesses, the most serious of
which is cervical cancer. It is said that HPV strains
16 and 18 cause up to 80 percent of all cervical
cancer. This may well be true. But a more relevant
question is, why do so few women contract this disease,
when millions are able to successfully fight it
off? Which women are most susceptible to long-term
infection with the oncogenic strains of this virus?
Are there are other, less drastic ways of reducing
the risk of cervical cancer in susceptible women,
short of inoculating the entire female population?
There are answers to these questions. Indeed it
turns out that science has already discovered effective
ways of identifying those at greatest risk and detecting
the disease in its early pre-malignant phases. In
fact, so effective are current screening tests –
notably the Pap test (see below) – that cervical
cancer incidence has decreased by 80 percent in
the US over the past few decades, and continues
to decline steadily. This is largely attributable
to the effectiveness of the Pap test, one of the
great success stories in public health. Simply by
fostering sensible health habits, and increasing
the access of poor women to relevant information
about Pap tests, we could all but eliminate cervical
cancer, at a reasonable cost to society, with attendant
side benefits, and certainly without recourse to
mass vaccination with Gardasil.
HPV, Cervical Cancer and Gardasil
The American Cancer Society (ACS) estimates that
there will be 11,150 new cases of cervical cancer
and 3,670 deaths in the US in 2007. If Gardasil
is as effective as the manufacturer claims, it will
prevent up to 80 percent of these cases.
But the story does not end there. Fortunately,
cervical cancer usually has a very long latency
period. While it is necessary to be vigilant against
this disease, its progression is typically so slow
that there is ample time to discover and cure it.
Over 3,000 deaths may seem like a lot. But consider
how rare this disease is, compared to the tens of
millions of women who are infected each year with
HPV.
By some reports there are as many as 24 million
US women infected with HPV at any given time (NPIN
2007). But out of these 24 million women, as we
have said, only a tiny fraction (maybe one in several
thousand) actually goes on to develop cervical cancer
as a result of this infection, and typically this
process is extremely slow. It may take decades for
an HPV-infected woman to develop an outright cervical
malignancy, and oftentimes the process spontaneously
reverses itself and the woman’s immune system clears
up the infection on its own. In its public relations
campaign, Merck has tried to depict HPV as a major
threat to women’s health (see below). But getting
worried (much less panicked) about the mere presence
of HPV is totally misguided, since almost all of
us have it, yet few of us will ever develop a disease
on account of it.
What happens when an infection with HPV does result
in pre-malignant changes to the cervix? These precursor
lesions, termed epithelial dysplasia, cervical intraepithelial
neoplasia (CIN) and/or carcinoma in situ (CIS),
are not true malignancies. Rather, they are warning
signs that the cervical tissues are not perfectly
normal and that cancer may ultimately develop there.
The important point is that such conditions are
easily and routinely treated. The US National Cancer
Institute Web site (www.cancer.gov) states: “Properly
treated, tumor control of in situ cervical carcinoma
should be nearly 100 percent.”
In other words, there are few things in oncology
as certain as the cure of pre- malignant changes
in the cervix!
How much time does a woman have between the detection
of such pre-malignant changes (usually found as
a result of routine screening) and the appearance
of actual cancer? According to the US National Library
of Medicine’s Health Services/Technology Assessment
text:
“Generally, the progression to invasive cancer follows
a slow, predictable pattern. 30 percent to 70 percent
of untreated patients with cervical intraepithelial
neoplasia (CIN) will develop invasive carcinoma
in 10-12 years” (NLM 2007).
Thus, typically, cervical cancer has at least
a decade- long latency period. During this 10- or
12 year time span a woman would normally have three
consecutive Pap tests (see below). Since the false
negative rate of the modern day Pap test is extremely
low, the odds of this pre-malignant condition not
being detected by a series of consecutive tests
is very small. There is near-certainty that the
first Pap test, not to mention a second or third
one, would detect this condition with more than
sufficient time to successfully prevent the development
of an outright malignancy.
In a small minority of CIN patients (about 10
percent of the total, according to the NLM Health
Services/Technology Assessment text), lesions do
progress to invasive carcinoma in under one year.
However, even these more aggressive tumors are eminently
treatable. What is the cure rate for such tumors?
Historically, the five-year disease-free survival
rate for all stage I cervical cancers has been 92
percent (ACS 2007). But if the tumor is discovered
in stage IA, then the results are even better. According
to the University of Florida Shands Cancer Center
Web site:
“Approximately 95% of patients with stage IA cervical
cancer survive without evidence of cancer recurrence
10 years after surgery or radiation therapy. Less
than 5 percent of patients with stage IA cervical
cancer experience recurrence.” And even such recurrences
can often be treated successfully. So the actual
number of women who would need to deal with advanced
cervical cancer after being properly screened is
a tiny minority of a tiny minority – again, hardly
cause enough to inoculate the entire population.
The Pap Test
For the past half century or so, cervical cancer
incidence and mortality have been in a steep and
steady decline. There is perhaps no other cancer
whose natural history is so well understood and
whose diagnosis and treatment has been so thoroughly
mastered. One only wishes that the other major killers,
such as cancers of the lung, breast, colon and prostate,
could be controlled in a similar manner and with
an equal degree of success. The conquest of cervical
cancer began decades ago with the introduction of
the Pap test, named after its inventor, Dr. George
Papanicoulau (1883-1962). Papanicoulau is one of
the true medical heroes of the 20th century. Born
in Greece, for most of his career he was a researcher
at Cornell Medical Center in New York. He first
proposed a version of his test in the 1920s, but
his medical colleagues were skeptical. Faced with
stiff opposition and even mockery from his colleagues,
it took 30 years for his ideas to eventually prevail.
The Pap test became so deservedly famous that
its inventor was featured on a 1978 commemorative
postage stamp in his adopted country, the US, and
on the 10,000 drachma bill in Greece, his native
land (below).
The Pap test is basically a microscopic examination
of cells that have been shed (exfoliated) by the
uterine cervix. Abnormal or pre- malignant cells
show up years before any true malignancy has had
a chance to develop. While early Pap testing was
plagued by a relatively high rate of both false
positive and false negative results, modern Pap
tests have overcome these earlier shortcomings and
have become extremely accurate.
Since the mid-1990s, in fact, the Pap test has
been improved by putting the sample into a vial
containing a liquid medium that preserves the cells.
(The two best known of these tests are called Sure-Path
and Thin-Prep.) The sample is processed in a laboratory
into a cell thin-layer, then stained and examined
by light microscopy. The same liquid sample can
also conveniently be used to test for the presence
of HPV. (HPV testing can be added to the Pap smear
in women over the age of 30 to reduce the risk of
false negatives even further.) In this way, the
sensitivity of the Pap smear has been improved to
nearly 100 percent.
So, let me reiterate this crucial point: through
regular cervical Pap smears, taken according to
a predetermined schedule (most women are on a three-year
cycle), almost every case of cervical cancer can
be detected in its precancerous phase, and appropriate
treatment can then be initiated. For the relatively
few women who slip through this screening regimen,
conventional treatment of early- stage cervical
cancer is still between 95 and 100 percent effective.
Thus, armed with the Pap test, and a few other simple
protective measures (which I shall describe below),
no woman need fear dying of cervical cancer. Even
without Gardasil, if a woman has adequate health
care, there is no reason to fear this disease, provided
that proper preventive and diagnostic procedures
are followed.
Life Style Issues
In addition to having regular Pap tests, there
are several other things that a woman can do to
reduce her risk of ever contracting long-term HPV
infections, cervical dysplasia, or cervical cancer.
Some of these relate to sexual habits. Short of
life-long celibacy, it is difficult to avoid HPV
entirely. But women (or men) who want to diminish
the risk of getting HPV infections should avoid:
- Having sex at an early age
- Having many sexual partners
- Having a partner who has had many sex partners
- Having sex with uncircumcised males
The use of condoms as a way of preventing HPV
has been controversial. Some religious conservatives
have argued against condom use, claiming that only
sexual abstinence can protect women against HPV
infection. But a 2006 study, published in the New
England Journal of Medicine, found that consistent
use of condoms could cut the risk of male-to- female
transmission of HPV by 70 percent. On the other
hand, this study gave no comfort to the pro-vaccination
side of this debate, since the implication was that
the need for vaccination against HPV had been overstated,
and that there was an alternative way – i.e., condoms
– of preventing most HPV infections.
There are other life style changes that may also
reduce the risk of cervical cancer.
Cigarette smoking is a major cofactor in the development
of this cancer, as in many other diseases. Tobacco
byproducts decrease the ability of the cervical
tissue to defend itself against HPV infection. In
a population-based study in Utah, women who smoked
had a 3.42 times greater chance of developing cervical
cancer than did nonsmokers. Nearly identical risk
was found among those who were exposed to the smoke
of others for three or more hours per day – so-called
passive smokers (Slattery 1989). Thus, in addition
to reducing the risk of lung cancer and heart disease,
among other maladies, smoking cessation is a way
of reducing one’s chance of developing cervical
cancer.
Diet also plays a role. According to a study published
in the journal Cancer Epidemiology, Biomarkers
& Prevention, women whose diets were high in
vegetables were 50+ percent less likely to have
long-lasting HPV infections than women with low
vegetable intake. They were therefore less likely
to develop cervical cancer. In this study, Dr. Rebecca
L. Sedjo and her colleagues at the University of
Arizona found that in addition to high vegetable
intake, the presence of one particular nutrient,
lycopene – found primarily in tomatoes, watermelon
and pink grapefruit – guarded against long- lasting
HPV infections (Sedjo 2002).
Finally, there is a definite link between one’s
immune status and the odds of developing precancerous
lesions following infection with the HPV virus.
A leading microbiology textbook states:
“The virus is ubiquitous, [but] precancerous lesions
and cervical cancer occur in immunosuppressed patients”
(Baron 1996). In one rare disease (epidermodysplasia
verruciformis) that is associated with HPV infection,
it has been shown that patients’ cell-mediated immunity
is significantly impaired.
“The exact role of the host immune response in
patients with CIN and cervical cancer is not clear,”
the textbook authors continue, “but the immune system
could be involved in the disease process and immunosuppression
appears to lead to an increase in cervical cancer
and CIN” (Baron, 1996, p. 617).
The condom should cover the entire shaft of the
penis, since the virus can be present in any part
of that organ.
Similarly, suppression of the immune system by
the human immunodeficiency virus (HIV) is an important
risk factor for cervical cancer, because it renders
the cells lining the lower genital tract more readily
infected by the cancer-inducing types of HPV (Stentella
et al 1998).
It is well-known that long term use of corticosteroids,
which are commonly prescribed for the treatment
of asthma and autoimmune diseases, can also lead
to immunosuppression. This increases the risk of
cervical infections. Women may also increase their
risk of CIN or outright cervical cancer through
the use of recreational drugs, alcohol and, as mentioned
earlier, tobacco products (Ylitalo et al 1999).
There are certain good-sense things that women
(and men) can do to keep their immune systems functioning
well. Positive ways to improve immunity include
ingesting certain foods and dietary supplements.
Here, I will mention just one example among many
- shiitake mushrooms (Lentinus edodes). Chinese
scientists have shown that the polysaccharide L-II,
isolated and purified from the fruiting body of
shiitake, significantly increased almost every parameter
of normal immunity, and was capable of shrinking
sarcomas in experimental animals. These researchers
concluded that “the antitumor activity of the polysaccharide
L-II on mice- transplanted sarcoma 180 was mediated
by immunomodulation in inducing T-cells and macrophage-dependent
immune system responses” (Zheng 2005).
Needless to say, the topic of immune modulation
and cancer is a huge one, but the basic principle
seems clear: to a certain extent, the health of
the immune system, and its ability to ward off potentially
dangerous viruses, is amenable to change by life-style
factors. If a woman wants to avoid cervical cancer
she can reduce her risk almost to zero by the following
healthy and prudent life style measures:
- Follow standard medical guidelines on having periodic
Pap tests. Have your doctors supplement these with
tests for HPV, when necessary.
- Practice safe sex: avoid promiscuity and use condoms,
if appropriate.
- Do not smoke and do not allow yourself to be exposed
to passive smoke;
- Eat a diet that is rich in nutrient-dense vegetables,
especially tomatoes and other lycopene-containing
produce.
- If necessary, take supplements or special foods
such as Asian mushrooms to boost immunity.
While nothing in life is certain, taken together
these should cut the risk of contracting long-lasting
HPV infections and/or invasive cervical cancer significantly.
If cervical cancer by some chance does occur, prompt
treatment can almost always arrest this disease
completely. If every woman in America followed these
simple and inexpensive guidelines death from cervical
cancer would be exceedingly rare – and certainly
there would be no need to inoculate every schoolgirl
in order to prevent it.
HPV As a Risk Factor for Other Diseases
But, it will be argued, Gardasil does other things.
It also prevents up to 90 percent of the genital
warts caused by HPV. Genital warts are highly contagious.
The National Institute of Allergy and Infectious
Diseases Web site states that “about two-thirds
of people who have sexual contact with a partner
with genital warts will develop warts, usually within
3 months of contact” (NIAID 2006). While genital
warts are never themselves fatal, they are a significant
and fairly common venereal disease. They particularly
occur in the 20-24 year age group. It is said that
there has been a fourfold increase in the past 20
years, although it is not known if this increase
is due, in part, to a heightened awareness and willingness
on the part of young people to present for treatment.
Genital warts, like other HPV infections, seem
related to one’s immunological status. NIAID’s Web
site also states that they “often disappear even
without treatment” (NIAID 2006). A Finnish study
followed 532 women with HPV infections for 45 months.
They found that even among those with pre-malignant
lesions the rate of spontaneous remissions was 41.8
percent (Kataja 1989).
In a randomized trial in Manchester, UK, researchers
found that even in women who had precancerous conditions
“spontaneous regression of cytological abnormality
occurred in 26 per cent of untreated women.” The
authors concluded “the substantial rate of spontaneous
regression suggests that intervention is frequently
unnecessary” (Woodman 1993).
For those who do not recover spontaneously, there
are various treatments. Surgical excision has a
cure rate of 63 to 91 percent. Even resistant infections
have been cured by subcutaneous injections of interferon-alpha-2b
(the synthetic form of an immune-system component).
The cure rate in one study was 52 percent (Petersen
1991).
While highly unpleasant, genital warts are a warning
flag for HPV infection and bring the affected persons
into the clinic for treatment, and this offers the
opportunity for Pap testing and education.
Gardasil is seemingly a very effective way of
preventing most cases genital warts. One wonders,
though, how many parents – or state legislatures
– would approve of making such a vaccine mandatory
simply on the basis of its activity against sexually-transmitted
warts.
It would seem more appropriate for doctors to
offer Gardasil, on a voluntary basis, to young people
- including possibly young men - who are becoming
sexually active and seem at high risk for contracting
this infection. In no case, however, can this vaccine
substitute for safe sex practices, since there are
other infections (such as HIV) in the sexual arena
that are most appropriately prevented by condoms.
Anal and Penile Cancer
It is also known that HPV infection often precedes
several other serious diseases, the most dangerous
of which penile cancers in men and anal cancers
in both sexes. Because of the risk of penile cancer,
and because boys and men represent a great reservoir
for the strains of HPV that cause cervical cancer,
there have been calls for the universal vaccination
of male Americans, as well.
“We need to move toward a paradigm where this
is a universal vaccine,” said Bradley Monk, MD,
associate professor in gynecologic oncology at the
University of California at Irvine, in an often-cited
commentary in the journal Obstetrics & Gynecology
(Reuters 2007).
The official CDC position is as follows:
“We do not yet know if the vaccine is effective
in boys or men. It is possible that vaccinating
males will have health benefits for them by preventing
genital warts and rare cancers, such as penile and
anal cancer. It is also possible that vaccinating
boys/men will have indirect health benefits for
girls/women. Studies are now being done to find
out if the vaccine works to prevent HPV infection
and disease in males. When more information is available,
this vaccine may be licensed and recommended for
boys/men as well” (CDC 2006).
We should emphasize that Gardasil at this point
is only being recommended for girls and women and
has not been tested or approved for use in men.
So even if every female in America were vaccinated,
the disease could still be widespread in men, and
could continue to spread via male-to-male sex.
How effective would a male Gardasil vaccine be
in regard to cancer prevention? Penile cancer represents
about 0.2 percent of the total number of diagnosed
malignancies in men. There will be an estimated
1,280 cases of cancer of the penis and genitalia
in men in 2007, with a total of 290 deaths. HPV
alone may not be the only – or even the direct –
cause of penile cancer: other cofactors may contribute,
as they do with cervical cancer.
For example, one study has shown that cigarette
smoking is associated with an astonishing 4.5-fold
risk of invasive penile cancer (Daling 2005).
In this same study, DNA from the HPV virus was
detected in 79.8 percent of tumor specimens, and
most of these (69.1 percent) specifically for HPV
strain 16 (Daling 2005).
Yet consider how truly rare penile cancer is.
Despite the near ubiquity of HPV infection among
young men, invasive penile cancer is almost unknown
as a disease in the United States especially among
men who do not smoke tobacco. In addition, it appears
that circumcision in childhood reduces – although
it does not eliminate – the risk of penile cancer
later in life.
The experts differ, sometimes quite vehemently,
on the advisability of circumcision as a cancer
prevention strategy. It is beyond the scope of this
report to comment on this ongoing controversy.
Another class of malignancies that has been associated
with HPV is cancer of the anus, anal canal and anorectum.
Together, these afflict a total of 4,650 Americans
per year, 1,900 of whom are male and 2,750 are female.
There are a total of 690 deaths (260 male, 430 female).
The risk of anal and anorectal cancer is higher
among men who have been the passive partners in
homosexual sex, and the risk is higher still in
men who are infected with the HIV virus and have
compromised immune systems. Among non- homosexual
men and among non-HIV positive women, anal cancer
is another very rare disease.
The exact relationship between anal cancer and
anal HPV infection remains uncertain. According
to a University of California Web site:
“What is the natural history of anal HPV infection?
We don’t really know since long-term studies have
never been done. What is clear though is that most
people don't run into trouble from HPV infection.
Some people develop AIN [anal intraepithelial neoplasia
– a premalignant lesion, essentially the equivalent
of CIN in the uterine cervix, ed.] due to HPV infection,
but most of the cases of AIN will not progress to
cancer. In most people the AIN will go away by itself
and they will not even have been aware of it.” (www.analcancerinfo.ucsf.edu).
This parallels the natural course of HPV infection
in genital warts, with its relatively high rate
of spontaneous remissions. So inoculating the entire
population against HPV in order to prevent anal
or penile cancer makes even less sense than it does
as a policy to prevent cervical cancer. The number
of cases is relatively small to begin with and the
connection of HPV to anal cancer has not been established
with the same certainty that it has for much cervical
cancer. And of course inoculating females will not
be sufficient to stop the occurrence of anal cancer
among men, which is most prevalent among HIV- infected
passive homosexuals.
Shortcomings of the Gardasil Clinical Trials
Like all new drugs, Gardasil was approved after
a series of clinical trials. In my opinion, however,
there were some serious limitations to the trials
on which FDA based its approval of this new agent.
One of the key questions that must be answered
when considering any proposal for mass vaccination
is this: What are the long-term consequences, positive
as well as negative, of such vaccination? But in
the clinical trials that led to the approval of
Gardasil, the follow- up of participants was relatively
short: test subjects were only monitored over a
period ranging from 18 months to 4 years. Thus we
have no data on which to base an assumption of long-term
safety.
While the immediate side effects of vaccination
were minor (largely limited to tenderness at the
injection site and mild fever) doctors also acknowledge
that severe side effects are typically only seen
in the so-called “post-marketing period,” when the
vaccine has been administered to a larger number
of people over a protracted length of time.
Furthermore, we currently do not have any evidence
concerning the durability of Gardasil’s immunity
beyond 5 years. In other words, it is simply not
known how long this immunity will last. At the time
of approval (2006), follow-up from the initial clinical
trials had only continued for at most 5 years. It
appeared that immunity was still present after this
time, but the future is a question mark. A document
from the European Medicines Agency (EU equivalent
of the FDA) states: “However, the durability of
response in this target group as well as long-term
persistence of efficacy and immunogenicity requires
close monitoring for 10 to 15 years. This will be
critical for the decision of the optimal age to
vaccinate sexually naïve subjects” (EMA 2006). In
the US, however, the vaccine was rushed through
with at most five years of follow up observation
and a decision was made, in Texas, at least, to
vaccinate all 11- and 12-year olds.
Should the vaccine’s effectiveness weaken over
time, as is very possible, then periodic booster
shots will be necessary in order to maintain adequate
levels of immunity. This, however, will lead to
a concomitant increase in potential side effects
and costs. FDA approval was based on clinical trial
involving just over 20,000 young women. This may
seem like a considerable number. But less than 1,200
of these were under 16 years of age and few of them
were at the sensitive age of puberty – typically
10-12 years in American girls – which happens to
be the age suggested as the optimum target group
for mandatory inoculation in Texas. (This is not
coincidental, as the goal is to inoculate girls
before they become sexually active.)
As mentioned above, the follow up of clinical
trial participants was for 4 years at most; and
only 18 months for many of the subjects, including
the 1,200 in the youngest age group. So we have
a situation in which the very group that is being
singled out for mandatory vaccination is actually
the group that was conspicuously under-represented
in the clinical trials, and followed up for the
shortest time.
Alum Adjuvant
In the clinical trials, only 10 percent of the
control group was given a genuine placebo (i.e.,
an inert saline solution). The remaining 90 percent
were given a solution containing the same alum (aluminum
hydroxide) adjuvant that is contained in Gardasil.
Hence the vast majority of the control group was
also exposed to the adjuvant, whose purpose is to
act as an immunological “kick” in order to elicit
a heightened immune response. Both the experimental
and the placebo groups complained of numerous post-vaccination
events, most of which were minor. As expected, the
incidence of such events was higher in the experimental
(full vaccination) group, but what is more disturbing
is that among the small true placebo group (i.e.,
those who received nothing but saline, without the
alum adjuvant) the incidence of side effects and
post- vaccination events was very markedly less
than in the other groups. This suggests that the
vaccine itself, with its alum adjuvant, can cause
side effects.
It remains to be seen whether other, more serious
side effects will develop over time.
There is no reason to doubt that immediate adverse
reactions to vaccination were generally minor in
the clinical trials that led to approval; however,
a small number of participants (9 in the Gardasil
group vs. 3 in the placebo group) did develop more
serious symptoms, which Merck acknowledges are potentially
indicative of vaccination-triggered systemic autoimmune
disease. (An autoimmune reaction is an immune response
by the body against one of its own tissues.)
There were over 21,000 patients enrolled in the
five Gardasil trials: 11,813 received Gardasil itself,
while 9,701 received placebo. There were nine cases
of arthritis in the Gardasil group, vs. 3 in the
placebo group.
Admittedly, the absolute number of serious adverse
effects is small. But when you are talking about
vaccinating up to two million people, each and every
year, even small numbers add up. For instance, 9
out of 11,813 represents a serious adverse event
rate of just 0.076 percent. But if 2,000,000 girls
are inoculated nationwide each year, as advocates
propose, the number of anticipated cases of arthritis
would climb to around 1,520 cases per year. Arthritis
in young people can vary in intensity. But in its
worst form, juvenile rheumatoid arthritis (JRA),
it can be totally debilitating. Here is a description
of JRA from the kidshealth.org, a Web site of the
Nemours Foundation:
“Systemic JRA affects the whole body. Symptoms include
high fevers that often increase in the evenings
and then may suddenly drop to normal. During the
onset of fever, the child may feel very ill, appear
pale, or develop a rash. The rash may suddenly disappear
and then quickly appear again. The spleen and lymph
nodes may also become enlarged. Eventually many
of the body's joints are affected by swelling, pain,
and stiffness.”
Even a relatively small percentage of adverse
effects like this would be a very high price to
pay for the prevention of a disease that is entirely
preventable by other means.
Lawsuits stemming from what are perceived as after
effects of the vaccine could also represent a major
financial challenge to the manufacturer and a political
problem for all those who mandated its use.
The Case of the Rota Vaccines
Since large-scale and long-term data are not yet
available, we do not know if serious adverse events
will occur. Perhaps not. Perhaps Gardasil will turn
out to be as safe as its manufacturer, the FDA and
almost the entire medical establishment assures
us it will. However, experience teaches us to remain
vigilant, if not skeptical, on this point.
It is rarely mentioned that the FDA has already
had to acknowledge major problems with the safety
of at least one other vaccine, after initially approving
it. In the 1990s, FDA approved Wyeth’s RotaShield
as a vaccine against rotavirus, which can cause
serious diarrhea in infants. But FDA withdrew its
approval for RotaShield in 1999 after doctors established
that vaccinated infants suffered an increase in
the incidence of intussusception, a serious and
potentially life- threatening condition in which
a section of the intestine telescopes into itself,
and becomes blocked or twisted.
Not to be deterred, in February 2006, FDA subsequently
approved RotaTeq, another anti- rota vaccine, after
70,000 infants were enrolled in a clinical trial
in which half got the active vaccine and half a
placebo. Those studies showed “no significant increased
risk of intussusception,” according to an FDA public
health notice at the time. An FDA official called
the results “reassuring.” But more recently – on
Feb. 13, 2007 – FDA announced that 28 babies in
the United States had developed the identical problem,
potentially deadly intussusception, after receiving
the newer RotaTeq vaccine (Hitti 2007).
Parents have been asked to notify FDA if their
child suffers intussusception after receiving RotaTeq.
However, the manufacturer continues to deny the
association and claims that intussusception is a
natural event unrelated to use of its product (Hitti
2007). The name of the manufacturer? Merck.
This doesn’t prove, of course, that Merck’s other
vaccine, Gardasil, is harmful. But it does illustrate
that vaccines are not necessarily without serious
health repercussions. Such adverse effects sometimes
only show up in the years after the FDA has approved
an inoculating agent. When one is proposing administration
of such an agent to millions of people, as in the
case of Gardasil, even a relatively rare but serious
side effect can have disastrous public health consequences.
Does Gardasil ‘Cure’ Cervical Cancer?
I wish to clear up some issues of terminology.
Texas governor Perry has misleadingly – and outrageously
-- spoken of Gardasil as a “cure for cancer.” According
to the NCI’s Dictionary of Cancer Terms, a cure
is a treatment that heals or restores health. But
Gardasil, even according to its proponents, cannot
cure any existing disease. It simply prevents infection
in most cases with four potentially dangerous viruses.
Strictly speaking, Gardasil it also has not been
shown to prevent cervical cancer: it has simply
been shown to confer immunity against two strains
of HPV that are associated with the development
– in particular individuals – of this disease.
As mentioned, cervical cancer is generally a slow-
growing tumor, and the test period for Gardasil
was not a lengthy one. Therefore, it is hardly surprising
that not a single case of cervical cancer occurred
in the test groups during the clinical trials. In
the trials, the development of genital warts and
CIN were used as “stand-ins” for cervical cancer
– but that is not the same thing as truly demonstrating
the prevention of cervical cancer. Even the FDA
has been forced to admit that.
According to the FDA:
“The results [of the clinical trials] showed that
in women [ages 16-23] who had not already been infected
with the type of HPV contained in the vaccine, Gardasil
was nearly 100 percent effective in preventing precancerous
cervical lesions, precancerous vaginal and vulvar
lesions and genital warts caused by infection with
the HPV types against which the vaccine is directed”
(FDA 2006).
Approval was given based on an extrapolation from
conditions known only to be associated with an increased
risk of cervical cancer. The best the FDA can do
now is to sidestep this issue by saying: “It is
believed that prevention of cervical precancerous
lesions is highly likely to result in the prevention
of those cancers” (FDA 2006, emphasis added). So,
are we now mandating vaccines for half the population
based on an unproven premise that is ‘believed’
to be ‘highly likely’? Where is the science in that?
Cervical cancer was not prevented in these trials.
Cervical cancer can take decades to become clinically
apparent, and does not always arise out of a pre-existing
lesion. Claims for the vaccine’s effectiveness are
therefore based only on surrogate markers (stand-ins
that indirectly reflect a patient's clinical condition),
and not on any demonstration of preventing cervical
cancer itself.
Neither genital warts nor CIN is the equivalent
of full- blown cervical cancer: both conditions
can be present, and can persist over many years
without progressing to cervical cancer. Unlike cancer,
these lesions often resolve spontaneously. They
do not predictably and always progress to outright
cancer. So the claim that the vaccine prevents cervical
cancer is based on the decidedly shaky assumption
that CIN is the equivalent, on a 1:1 basis, with
cervical cancer.
Also, it should be noted that nearly 30 percent
of the trial participants were not immunologically
naïve – i.e., they showed evidence of prior exposure
to, or ongoing infection with, at least one of the
four strains of HPV against which Gardasil is said
to be protective. Put another way, almost one-third
of the trial participants had already been challenged
with, and had mounted an immune response to, one
or more components of the vaccine. But the 100 percent
efficacy in preventing the surrogate lesions (CIN,
VIN, warts, etc.) was only seen in those participants
who were not already infected at the start of the
trial and these made up only about 70 percent of
the trial participants. Merck’s own report on the
clinical trial states “There was no clear evidence
of protection from disease caused by HPV types for
which subjects were PCR [polymerase chain reaction,
ed]. and/or seropositive at baseline” (Merck 2006).
Yet the vaccine has been approved by the FDA for
administration to women between the ages of 9 and
26.
Merck’s product information states: “Gardasil
has not been shown to protect against the diseases
caused by all HPV types and will not treat existing
disease caused by the HPV types contained in the
vaccine. The overall efficacy of Gardasil, described
above, will depend on the baseline prevalence of
HPV infection related to vaccine types in the population
vaccinated and the incidence of HPV infection due
to types not included in the vaccine.”
If the prevalence of existing infection in the
clinical trial population is representative of the
prevalence in the population at large, one can reasonably
assume that in the general population only two-thirds
of those vaccinated will be fully protected. One
can also reasonably expect that pre-existing exposure/
infection will be even more prevalent in the age
groups above those tested in the clinical trials
(i.e., 25 yrs +), representing women at their most
sexually active.
Therefore claims of 100 percent protection against
oncogenic (cancer-causing) strains that cause 70
percent of cervical cancer apply only to about 70
percent of those likely to be vaccinated. The compounding
effect of these two 70 percents certainly reduces
the attractiveness of the efficacy statistics!
False Sense of Security?
One point that has been repeatedly made by critics
of compulsory inoculation is that youngsters who
have been vaccinated against HPV may acquire a false
sense of security about their subsequent risk, and
this may cause them to engage in risky sexual behavior
or to forego regular Pap testing.
“If they think they are protected against one
venereal disease, they may think they're protected
against all venereal diseases,” said Ravinder Khaira,
a Sacramento pediatrician. “That's just the way
some kids think” (quoted in Stein 2006).
This point of view, put forward by many skeptical
parents, has been ridiculed by some scientists.
UC Irvine’s Dr. Bradley Monk, for instance, characterizes
it as follows:
“Just because you wear a seat belt, does that mean
you drive recklessly? Or just because you give your
son a tetanus shot, does that mean he is going to
go out and step on a rusty nail? Of course not”
(Reuters, 7/30/ 06).
But what is really known about effect of Gardasil
vaccination of sexual behavior? This is an unknown
area. It seems that both sides in this public debate
are arguing more from analogy than from fact. Are
there sociological studies of teenage behavior to
suggest whether they are more – or less – likely
to engage in risky behavior after being vaccinated?
Or are people just arguing based on their preconceptions
about the benefit or harm of the product in question?
(Dr. Monk, for instance, believes the entire US
population, males included, should be inoculated.
He has said that “To have a vaccine that prevents
cancer and not use it would be one of the greatest
tragedies,” again conflating the prevention of HPV
infections with “preventing cancer.”)
Parents and pediatricians (who know children’s
behavior best) are certainly right that teenagers
sometimes engage in very risky behavior and do not
always draw logical conclusions, especially when
it comes to sex. Some youngsters may in fact believe
that once they have submitted to the ordeal of three
consecutive Gardasil injections they have been “vaccinated
against cervical cancer,” and no longer need to
worry about it. We simply don’t know what the “takeaway
message” will be for most teenagers.
When an academic expert cannot distinguish between
preventing infection with four strains of HPV and
preventing cervical cancer, and when the governor
of Texas outrageously refers to Gardasil as a “cure
for cancer,” can we expect the average teenager
to make such fine distinctions?
We do know that many teenagers do not have a strong
grasp on possible dangers associated with sexual
behavior. For instance, a 2003 Kaiser Family Foundation
study of showed that one in four American adolescents
and young adults contracts a sexually transmitted
disease annually! This same study found that 70
percent of women ages 15 to 24 consider forms of
contraception other than condoms – such as birth
control pills – to be a form of “safer sex,” while
80 percent consider oral sex “safer” than vaginal
or anal intercourse (Kaiser 2004). (Of course, we
recently had a President of the United States who
didn’t consider oral sex to be sex at all.) How
being inoculated with Gardasil will affect girls’
and women’s sexual behavior seems to me to be a
perfectly legitimate – in fact, urgent – area for
scientific investigation.
In particular, it will be important to see if
taking Gardasil has an impact on awareness of the
need for Pap testing in the entire female population.
Gardasil advocates cede that the need for Pap tests
continues regardless of vaccination, since the vaccine
only protects against 70 percent of the risk. But
if a false sense of security were to develop among
young people, and Gardasil were even marginally
to reduce the perceived need for routine Pap tests,
then the vaccine might paradoxically contribute
to an increased, rather than a decreased, risk of
cervical cancer and death.
Economic Issues
Merck charges a base price of $360 for the required
series of three Gardasil injections. This is considered
an unprecedentedly high charge, making it unsuitable
for sale in underprivileged countries, where most
of the cervical cancer occurs worldwide.
In the US (as in most countries) the associated
costs of providing the injections (medical administration
fees, etc.) will add approximately $100-$150 to
this base price. A more realistic per-person cost
would therefore be in the range of $450-$550. Since
each year’s cohort of schoolgirls in the US is about
2 million, the annual national cost of administering
Gardasil will therefore approach $1 billion (2,000,000
x $500). This cost will have to be shared among
insurance companies, parents’ out-of-pocket expenses,
and various government agencies. Note that this
billion dollar expenditure will have to be repeated
each year, ad infinitum, to cover each cohort of
2 million sixth graders.
We do not yet know if Gardasil provides lifetime
immunity or if it will have to be re- administered
periodically, at some as yet undetermined interval.
However, the possible cost of providing such booster
shots has rarely been figured into the calculation
of total costs. Merck acknowledges that the duration
of immunity following immunization will only be
discovered after a substantial number of girls and
young women have been vaccinated and followed for
up to a decade. However, it is to be expected that
booster shots will indeed be needed. The first cohorts
of vaccinated girls will therefore be the de facto
proving ground.
Let us say, hypothetically, that the vaccine effectiveness
diminishes after ten years, the way that the tetanus
vaccine does. Then girls who received the vaccine
initially at 11-12 years of age will have to be
re-inoculated at age 21 -22, and probably every
ten years thereafter. Without regular booster shots,
immunity will decrease, and possibly even disappear
entirely, and these females will have been repeatedly
inoculated in vain. Since the risk of being infected
by a partner is always a possibility, booster shots
will have to be administered for as long as the
woman is sexually active. Being in a monogamous
relationship is no guarantee that one will not be
infected by one’s spouse (since between half and
three-quarters of the population is HPV- infected.)
So the cost of inoculating each individual woman
will not be just the initial $500, but $500 plus
the cost of administering each booster series over
the course of a woman’s sexually active lifetime.
If we hypothesize that booster shots will be necessary
every ten years, then each woman will need vaccinations
at ages 11, 21, 31, 41, 51, and possibly beyond
(depending on her sexual activity).
Thus, if Gardasil immunity does periodically wear
off (as is widely anticipated), and if a course
of re-inoculation is called for, the cost of protecting
each woman will be closer to $2,500 than $500, and
the cost of inoculating each year’s cohort of two
million females will rise from one billion to somewhere
closer to five billion dollars per year, each and
every year. And this will be just in the US (presuming
that the cost of the vaccine remains the same).
Let us for the moment calculate on a strictly
economic basis the likely cost and benefit of Gardasil
inoculation. What is the potential anticancer benefit?
This year in the US, 11,150 women will be diagnosed
with cervical cancer and 3,670 women will die of
the disease. If HPV 16 and HPV 18 do indeed cause
70 percent of the annual cases (and if no other
opportunistic strains of HPV move into the ecological
niche vacated by these two), we can calculate that,
in the best case scenario, Gardasil will prevent
7,805 cases of cervical cancer. At the current rate
of death, this will save around 2,569 lives annually.
Of course every life saved is an unequivocally
desirable outcome. But if the cost of providing
this benefit is $1 billion per year (my projected
cost for each cohort-year, i.e. $500 x 2 million
girls, receiving a single course of injections),
then the cost of saving each life will be $389,257.
If, however, we take into account the fact that
women will possibly need at least one course of
booster shots then the price for each life saved
will rise accordingly to around $650,000. Should
she need five inoculations over the course of a
lifetime, then the cost for each life saved would
be almost two million dollars ($1,946,280).
If the goal is to save women’s lives, there are
certainly more cost-effective ways of doing so.
And, as is well known, cervical cancer deaths are
almost entirely preventable. Women generally only
die of the disease because they have failed to get
regular Pap smears, and other diagnostic tests,
which detect pre-malignant growths and cancers in
their earliest and most curable stages. The universal
use of such tests would obviate the need for expensive
vaccines administered to girls as young as 9 years
old. Providing free and easily obtainable Pap tests
would also draw more underprivileged women into
the health care system, which would have the additional
benefit of allowing other diseases and conditions
to be discovered and treated early.
Poverty Is A Barrier
Why then are women still dying of cervical cancer?
In the US, it is mainly because of a deplorable
lack of gynecological care for poor women, especially
in minority communities. A 2001 study found that
12 percent of women aged 18-64 had not received
any Pap screening within the previous 3 years. But
the actual figures may be higher. The US National
Cancer Institute says that “the current death rate
is far higher than it should be and reflects that,
even today, Pap smears are not done on approximately
33 percent of eligible women.”
This is hardly surprising, as over 20 million
women lack health insurance, and are far less likely
to have regular Pap tests than those with private
insurance. Among less affluent women of Mexican-American,
Puerto Rican or Vietnamese heritage, cervical cancer
is two to three times more common than among non-
Hispanic white women (Chu 2001). A lack of proper
educational efforts by doctors and public health
officials may be responsible for this problem. A
study in California and Texas found that “Vietnamese-
American women have low rates of Pap test awareness,
intention, and receipt. Efforts to increase Pap
test utilization in this population need to be directed
at encouraging physicians to offer the Pap test
and empowering women to ask for the test (Nguyen
2002).
Women who get regular Pap tests almost never die
of cervical cancer. The real targets of Gardasil
– although this is rarely articulated – are therefore
the children of the poor, especially minorities
and underprivileged communities. But is Gardasil
really the answer to their health problems? Wouldn’t
these young people be far better served by gaining
access to a comprehensive national health insurance
program, one that includes Pap tests on a prescribed
schedule? Doesn’t mandating vaccination for cervical
cancer evade the urgent need to implement such a
system?
One has to question why there is such widespread
enthusiasm for Gardasil but so little enthusiasm
for bringing the benefits of Pap tests to the 33
percent of the population that currently doesn’t
(or cannot) avail itself of them? Could this disparity
have something to do with that $4 billion in annual
sales that Wall St. projects for Gardasil (Simons
2006)?
Meanwhile, in its 2006 budget the Bush Administration
proposed a $1.4 million cut in funding for the National
Breast and Cervical Cancer Early Detection Program,
run by the Centers for Disease Control, which provides
free Pap tests to uninsured, underserved and low
income women. According to New York Times columnist
Bob Herbert, this would mean that 4,000 fewer women
would have access to early detection. “This makes
no sense,” said Herbert. “In human terms, it is
cruel. From a budget standpoint, it’s self- defeating,”
since, as is well known, prevention is more economical
than cure (Herbert 2006).
The money being allocated for Gardasil could –
and should – go into stepped-up cervical cancer
screening for the poor. And while the Administration’s
health agencies pay lip service to the need for
Pap tests among all Gardasil recipients, it simultaneously
proposes cutting access to those tests among those
who need them the most!
“We’re going backwards,” said Wendy Selig, vice
president of legislative affairs for the American
Cancer Society, in reference to these cuts. “There
are so many avenues in research to combat cancer,
we should be increasing the investment into research,
not cutting it” (CancerCompass.com, Jan. 11, 2007).
Rush To Vaccinate
There is an unseemly political dimension to the
story unfolding in Texas. Opponents of mandatory
Gardasil vaccination point out that Merck employs
as its lobbyist Gov. Perry’s former chief of staff,
Mike Toomey. According to the Wall St. Journal,
the company has also bankrolled the influential
lobbying group, Women in Government, which has been
among the most vociferous advocates of compulsory
Gardasil vaccination at the level of the states.
Gov. Perry’s present chief of staff’s mother- in-law,
Deirdre Delisi, also happens to be the Texas state
director of Women in Government. An executive from
Merck’s vaccine division has also served on the
board of Women in Government. The Wall St. Journal
further revealed that that many of the bills to
mandate Gardasil were introduced into several state
legislatures by members of this group.
In late February, 2007, the Associated Press reported
that Gov. Perry’s present chief of staff met with
key aides about the vaccine on Oct. 16, 2006. This
happened to be the See also Janice Hopkins Tanne’s
informative article in the British Medical Journal
2007;334:332. same day that Merck’s political action
committee (PAC) donated $5,000 to the governor’s
campaign (Peterson 2007b).
Gov. Perry defended his Gardasil decision in the
following terms:
“When a company comes to me and says we have a cure
for cancer, for me not to say, ‘Please come into
my office and let’s hear your story for the people
of the state of Texas, for young ladies who are
dying of cancer,’ would be the height of irresponsibility.
Whether or not they contributed to my campaign,
I would suggest to you, are some of those weeds
that we are trying to cut our way through” (Stinebaker
2007).
Reporters, not satisfied with this rather incoherent
statement, pressed Gov. Perry on the question of
precisely when he had decided to issue the February
2 executive order that requires the vaccination
of all sixth-grade girls. He snapped back: “I wish
you all would quit splitting hairs, frankly, and
get focused on ‘Are we going to be working together
to find the cure for cancers?’ No, I can’t tell
you when” (Stinebaker 2007).
Gov. Perry’s spokeswoman Krista Moody claimed
that his order was effective until he or a successor
changed it, and the Legislature had no authority
to repeal it. But, according to the Associated Press,
even before these campaign contributions became
known, the House public health committee had voted
6-3 to override Perry’s executive order and had
sent the revised bill to the full House. This bill
– undoing Perry’s order – was cosponsored by two-thirds
of the state representatives. The Texas House was
not expected to take up the measure until mid-March.
A repeal measure has also been introduced in the
state Senate, with nearly half of that chamber cosponsoring,
as well. At this writing, Perry had not decided
whether he would veto the repeal bill, when and
if it reaches his desk.
“I highly respect the legislative process that
we have, and so I would respectfully tell you that
we will let it play its way out,” said the governor.
It is classic Orwellian doublespeak to say that
one “respects” the legislative process while at
the same time bypassing the deliberations of the
state’s elected representatives and issuing an executive
order!
“But do you think we would be having the debate
today on HPV if I had said, ‘Let’s pass some legislation?’”
asked Perry. If I understand that last sentence,
the governor seems to be admitting that he if he
had gone to the legislature with a bill for mandatory
Gardasil vaccination, it would have been rejected,
and that his decision to issue an executive order
was therefore designed specifically to avoid such
a rejection. The more he speaks, the deeper the
hole he digs for himself.
When Merck’s connection to Women in Government
became public, it led to further charges that the
company was bankrolling vaccination efforts in various
states (Peterson 2007a). In the face of increasing
public awareness of its intense lobbying efforts,
the company ostentatiously announced that it was
backing down. On Feb. 21, 2007, it declared that
it would stop lobbying state legislatures to adopt
Gardasil. As the New York Times quoted a Merck official:
“Merck would continue to provide health officials
and legislators with education about the vaccine
and would continue to lobby for more financing for
vaccines in general” (New York Times, Feb. 21, 2007).
One would need to be extremely naïve to believe
that this retrenchment was the end of the company’s
campaign to achieve mandatory vaccination in as
many states as possible.
Enter Cervarix
Merck’s “education” is likely to be as tendentious
as its public service announcements about HPV. They
are all part of a campaign directed towards one
end – the rapid adoption of Gardasil as a compulsory
vaccine for children. When Gardasil was approved
by the FDA in June 2006, it was called a “potential
blockbuster with no competition.” But now a strong
competitor has appeared on the horizon, GlaxoSmithKline
(GSK) with its own vaccine, Cervarix (Smith 2006).
Merck’s frantic lobbying effort seems to be directed
towards having Gardasil mandated for school admission
in the fall of 2007, thereby shutting GSK out of
this lucrative market.
According to Wall Street analysts, Merck is attempting
to corner the market on the vaccine while it can,
and to make its use a fait accompli before serious
competition arrives. This is a clash of economic
Titans that has nothing whatsoever to do with saving
women’s lives.
Religion and Science
The mainstream media has generally portrayed the
struggle over Gardasil as a battle between rational
scientists on the one hand, and religious conservatives
on the other. Certainly some parents feel that a
vaccine directed against sexually transmitted diseases
(STDs) interferes with the way they raise and educate
their children about sexual morality. Some feel
that if they teach their children to avoid promiscuous
sexual contacts, to form exclusively monogamous
and heterosexual relationships, and to live a healthy
lifestyle, their children will necessarily be free
of the risk of sexually transmitted diseases.
This may be true for some STDs, such as syphilis
or gonorrhea, but it is certainly not true for HPV.
HPV is so prevalent in the human population that
if one’s sexual partner has ever had intercourse
with another person there is a risk of infection.
One would have to know the exact sexual history
of one’s partner in order to be sure that he or
she is not infected, and people are not always truthful
about their sexual histories! Furthermore, you can’t
always tell if a person is infected. Although HPV
infection may manifest itself in the form of genital
warts, it doesn’t always do so, and oftentimes there
are no particular signs or symptoms. There is simply
no way to be certain that your son or daughter will
be guarded against HPV solely by living a ‘clean’
life- style.
For that reason, it seems to me that this sexual
morality argument is the least persuasive one being
leveled against widespread use of the vaccine. Parents
who rely on this argument underestimate the pervasiveness
of the various forms of HPV.
More relevant is the fact that HPV infection,
by itself, is not a life-threatening concern.
As we have discussed, the great majority of HPV
strains are harmless. Even exposure to the carcinogenic
strains is not ipso facto a cause for alarm. The
medical literature indicates that one’s chance of
contracting a long- lasting HPV infection can be
reduced by simple life-style modifications, such
as the use of condoms. And if all else fails, the
necessary triennial Pap tests can and will pick
up any atypical changes in cervical cells long before
they can become cancerous. Such changes can be dealt
with through routine measures that are nearly 100
percent effective. So the argument for the vaccine
fails on scientific grounds.
Wielding Ockham’s Razor
The 14th century English philosopher, William
of Ockham, once proposed a principle of logic known
as “Ockham’s razor.” This held that the explanation
of any phenomenon should eliminate (or “shave away”)
all portions of an explanation that make no difference
to the ultimate outcome. It is a very useful principle
that applies to the issue of Gardasil.
1. It is universally agreed that every woman needs
to have periodic gynecological exams (including
Pap tests) in order to detect pre- malignant lesions,
and thereby preclude the development of cervical
cancer.
2. It is also universally agreed that even women
who are vaccinated with Gardasil will continue to
need regular Pap tests.
3. But by taking such Pap tests, the overwhelming
majority of cervical cancers can be precluded by
standard medical procedures. So, wielding Ockham’s
razor, one can eliminate the redundant Gardasil
injections from the equation, since they add virtually
nothing to the successful fight against cervical
cancer.
The mainstream media have tended to ignore the
scientific weaknesses of the argument for Gardasil
and have instead promulgated the view that only
religiously conservative parents, or those who habitually
oppose the use of all vaccines, are resisting compulsory
vaccination with Gardasil.
In fact, in deference to religious scruples, the
Texas mandatory vaccination law was written to include
an opt-out clause exempting people from mandatory
vaccination, but only on religious or conscience
grounds. Ironically, you cannot opt out because
you reject the dubious science behind this financially-motivated
promotion.
Despite the limited nature of this opt-out clause,
the medical profession does not seem to want the
fact that there is such a clause to become widely
known. By and large, leading doctors would rather
leave parents with the impression that Gardasil
is mandatory and there is nothing that can be done
about it.
“A lot of us are concerned that if you allow people
to opt out of one vaccine they will opt out of other
vaccines that are due at the same time,” said Dr.
Mark Myers, executive director of the National Network
for Immunization Information, a pro-vaccination
group (New York Times, Feb. 17, 2007). So the fate
of Gardasil has become tied up with the larger and
even more acrimonious debate on the merits or dangers
of vaccination in general.
Can We Trust Merck?
Gardasil may indeed be as safe as advertised.
Only time will tell. But Merck’s track record in
revealing the dangerous side effects of its drugs
is hardly stellar. Take, for example, Merck’s infamous
anti-arthritis drug, Vioxx (rofecoxib). This was
another allegedly safe product, which Merck was
urgently forced to withdraw on Sept. 30, 2004 –
a date referred to by in a New England Journal of
Medicine perspective piece as “a day of infamy for
drug safety” (Avorn 2006).
After that withdrawal, FDA concluded that between
1999 and 2003, Vioxx had caused an astonishing 27,785
heart attacks and sudden cardiac deaths. Merck has
been besieged by lawsuits stemming from the Vioxx
fiasco. In one case alone, a jury fined the company
$253 million in damages (Berenson 2005). J.P. Morgan
Chase has estimated that Merck’s liabilities for
Vioxx could range from $8 to $25 billion (Smith
2005). On January 31, 2007, Merck reported that
its fourth-quarter profit had plunged 58 percent
despite higher revenue, mainly to cover its legal
reserves for Vioxx lawsuits (SignOnSanDiego.com).
This is a company in deep trouble.
To skeptics, the promotion of Gardasil is a major
part of Merck’s recovery strategy. One activist
critic, Vera Hassner Sharav, of the Alliance for
Human Research Protection (www.ahrp.org) has humorous
said that the abbreviation “HPV” stands for Merck’s
plea to “Help Pay for Vioxx” litigation (Saul 2007).
Wall Street analysts project $4 billion in annual
sales for Gardasil, which is enough to pay for over
11 million three-dose courses of Gardasil (at $360
a course). Such astronomical numbers can only be
attained if Gardasil is forced on parents and children
by compliant governments, in the US and abroad.
After all, how many parents do you think would volunteer
their sixth graders to be vaccinated against a disease
that can be entirely prevented by a simple and effective
screening test, which even those who are vaccinated
will continue to require?
Propaganda Campaign
Until recently the public had never even heard
of HPV, and most people could have cared less. This
lack of concern led to an all-out propaganda campaign
to “educate” public opinion on the topic. Last year,
Merck launched a $27.4 million ad campaign called
“Tell Someone,” softening up the public for the
impending vaccine rollout. The “Tell Someone” HPV
awareness campaign was designed to prime the US
market for Gardasil’s approval and subsequent launch.
In November 2006, came an even more massive print,
TV and Internet ad campaign for Gardasil, this time
centered around the theme, “One Less,” as in “one
less life affected by cervical cancer.” The underlying
idea was female empowerment. This campaign has been
equally successful. There are now almost one million
Web sites discussing human papillomavirus. HPV has
been the subject of front- page articles in almost
every newspaper. The New York Times has editorialized
twice in favor of compulsory vaccination against
the disease.
In effect, Merck has cast HPV almost as a new
disease, one that was to all intents and purposes
unknown before last year. This is a prime example
of what the late medical writer Lynn Payer once
described as “disease mongering” (Payer 1994). A
2006 Australian conference on this topic identified
the key techniques of disease-mongering, such as
(a) the expansion of the boundaries of disorders,
(b) the medicalization of normal life events, and
(c) the portrayal of risk factors as diseases in
themselves (www.diseasemongering.org).
Merck knows how to play this game skillfully,
and fear is its foremost weapon. The New York Times
quoted Margaret McGlynn, Merck’s president for vaccines,
as saying: “Each and every day that a female delays
getting the vaccine there is a chance she is exposed
to human papillomavirus” (Saul 2007).
Technically true, but medically irrelevant. Let
me reiterate that we are all exposed to up to 100
forms of HPV from birth onwards. Eighty percent
of all women (and probably at least the same, if
not more, men) have been exposed to more than one
form of this virus and are immune to them, without
ever exhibiting any clinical symptoms whatsoever.
Nature inoculates us with – and against – this
virus. It can be considered an inevitable part of
being human and, in itself, is not to be feared.
Thus, to say that each and every day that you delay
getting Gardasil you are putting yourself at risk
is scientific gobbledygook.
“The immune system is constantly challenged by
ubiquitous viruses,” said two pathologists at the
University of Nebraska. “Multiple immune defenses
have evolved to meet these challenges, and thus
immunocompetent individuals successfully respond
to infection without sequela” [a sequela is a condition
following as a consequence of disease, ed.] (Purtilo
1983).
Recommendations
With the health of millions of girls and women
potentially at stake, extreme caution is in order
in evaluating all claims of Gardasil’s safety and
efficacy. It is axiomatic that corporations like
Merck are in business to make money for their employees
and stockholders. Obviously, we should not reject
scientific claims on those grounds alone.
But Merck has a spectacularly poor record in regard
to the safety of at least one of its erstwhile leading
brands, Vioxx. I think this alone provides ample
reason to be cautious.
Remember that 20 million Americans took Vioxx
and only one quarter of one percent of them suffered
serious cardiovascular damage as a result. But this
statistical ‘blip’ created 50,000 medical catastrophes.
This is the equivalent of a small American city
getting wiped off the map. When huge numbers of
consumers are put at risk, it only takes a relatively
tiny fraction of a percent to add up to a big problem,
dwarfing the alleged benefit of the drug.
Government officials, egged on by the mainstream
media, are now talking seriously about forcing the
inoculation of millions of children, using a largely
unnecessary vaccine whose long-term effects are
unknown.
Should we make the entire female population, first
of Texas, and then of the other states and countries,
into human guinea pigs to test the long-term safety
of the latest moneymaking product from Big Pharma?
Wouldn’t it be more effective and economical,
rather than spending enormous sums on Gardasil,
to spend those same resources on a stepped-up campaign
to provide basic gynecological services to all women,
with special emphasis on minorities, the poor and
the uninsured? Even Gardasil advocates readily admit
that inoculated women are still going to need regular
gynecological exams, including Pap tests – but they
offer no solution to the fact that a third of US
women do not get such exams. In fact, the more government
and private money that is spent on Gardasil the
less will be available for basic gynecologic care
for the poor, who suffer the brunt of cervical cancer
incidence and death.
Fundamentally improving the public health system
so that every woman has access to routine and regular
gynecological exams (including Pap tests) makes
more sense. But reforming American health care will
require considerable political will. How much simpler,
then, to mandate a dubious vaccine, while simultaneously
refreshing the coffers of one of the world’s most
powerful drug companies.
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