Vaccines have been introduced to counteract problems caused by old vaccines. The chickenpox vaccine contributed to a herpes zoster (shingles) epidemic that may last for more than 50 years.
Herpes zoster
(HZ) is a reactivation of varicella
zoster, the chickenpox virus, and only affects those previously infected with
chickenpox. Although most people recover completely from chickenpox, the virus
never leaves the body, and especially as people age, the virus can become
active again and reappear as “shingles.”
Shingles appears as a painful rash
or group of blisters on one side of the body, and usually lasts for two to four
weeks. Although shingles usually resolves on its own without intervention, some
treatments exist to reduce the duration of the symptoms, as well as to prevent
a possible severe complication known as postherpetic
neuralgia.
Although you can't “catch” shingles
from someone who is infected, you can come down with chickenpox if
you've never had it before. Also, shingles is much more common in those over
50.
It was previously thought that the
weaker immune systems of the elderly contributed to this higher rate of
shingles, but recent evidence indicates that it's more likely because they have less
contact with children affected with chickenpox.
When most adults (who have already
had chickenpox) come into contact with children infected with the virus, their immunity
is naturally and asymptomatically boosted, protecting them from shingles.
According to
this study, “The peculiar age distribution of
zoster may in part reflect the frequency with which the different age groups
encounter cases of varicella.” Attacks of zoster are postponed when these
periodic encounters occur. Also, even the CDC acknowledges that those who have
been vaccinated against chickenpox are still susceptible to shingles.
Before widespread use of the
chickenpox vaccine, there were estimated to be 500,000 shingles cases in the US
each year. During the period of increasing varicella vaccination, beginning in
1998, HZ among adults increased by 90%.
According to a 2004 CDC report, the
number of shingles cases in 2002 was 33% than in 2001 and 56% than 2000. This study, a review of the US universal varicella vaccination
program, stated the problem quite clearly:
HZ morbidity costs have exceeded
the cost savings from varicella-disease reductions. Universal varicella
vaccination has not proven to be cost-effective as increased HZ morbidity has
disproportionately offset cost savings associated with reductions in varicella
disease. Universal varicella vaccination has failed to provide long-term
protection from VZV disease.
Neil Miller summarizes the
predicament:
Apparently, there is a societal
benefit when chickenpox remains endemic. When the wild-type varicella virus is
permitted to circulate naturally throughout society, adults receive beneficial
periodic exposures to the virus boosting their immune systems and helping to
suppress the reactivation of herpes zoster.
However, as more and more children
are vaccinated with the synthetic or manufactured chickenpox virus, the natural
virus becomes less pervasive and there are fewer opportunities for adults to
receive these periodic boosts. This has led to much higher rates of shingles in
Americans.
The FDA, CDC and vaccine
manufacturers “traded” chickenpox, a relatively mild childhood disease, for a
much more serious ailment that affects adults. Studies have
shown the cost alone for this mistake
may be astronomical:
We estimate universal varicella
vaccination has the impact of an additional 14.6 million (42%) HZ cases among
adults aged <50 years during a 50 year time span at a substantial cost
burden of 4.1 billion US dollars or 80 million US dollars annually utilizing an
estimated mean healthcare provider cost of 280 US dollars per HZ case.
Dr. Gary Goldman, an expert on the
varicella virus, was hired in 1995 by the CDC to monitor the new chickenpox
vaccine. According to Goldman:
Due to the universal varicella
vaccination program whereby every healthy child is vaccinated at age 12 months,
there are no longer the seasonal outbreaks of varicella that occurred in
schools and communities. These annuals outbreaks and exposures (called
exogenous exposures) played a significant role in boosting cell-mediated
immunity to help suppress the reactivation of herpes zoster among children and
adults who had a previous history of natural or wild-type varicella.
The universal varicella vaccination
program in the US...will leave our population vulnerable to shingles
epidemics...there appears to be no way to avoid a mass epidemic of shingles
lasting as long as several generations among adults.
According to Goldman, the CDC is
more than aware about the problem, and that when he approached them with his
concerns, they replied that “any possible shingles epidemic associated with the
chickenpox vaccine can be offset by treating adults with a shingles vaccine.”
By 2006, the FDA had licensed
Zostavax, a vaccine designed to reduce the risk of shingles. Incredibly, Merck,
the same company that makes Varivax (the chickenpox vaccine), is also
manufacturing Zostavax. Such an apparent conflict of interest is accepted
without question, even though the very “success” of Varivax is contributing to
the need for yet another product.
As a result of Goldman's research,
it's quite clear how dangerous it is to create new vaccines to treat problems
caused by old vaccines. He asserts:
The shingles vaccine serves as a
vaccine to offset the initial deleterious effects associated with the similar
and related varicella vaccine. It will be difficult to replicate the protection
against shingles that existed naturally in the community when incidence of
chickenpox was high.
Using a shingles vaccine to control
shingles epidemics in adults would likely fail because adult vaccination
programs have rarely proved successful. There appears to be no way to avoid a
mass epidemic of shingles lasting as long as several generations among adults.
As for the vaccine's effectiveness
when first released, even according to Merck, Zostavax was only 51% effective
at “reducing the risk” of developing HZ in those aged 60-69. Efficacy drops to
41% in those 70-79, and is merely 18% above 80.
Several conflicts of interest also
surround Merck and the HZ vaccine. Merck participated in
the organization of oversight activities and monitored the progress of the primary study used to justify licensing the
vaccine.
Several authors of the study
received consultation fees, lecture fees, or honoraria from Merck. Others
received grant support from Merck or owned stock in Merck—all while
concurrently overseeing important aspects of the study requiring complete
objectivity. Two of the researchers were actively involved in this study while
having “partial interests in relevant patents.” Still others were employees of
Merck.
A member of the CDC's Advisory
Committee on Immunization Practices (ACIP), Dr. William Schaffner, even received
financial payment from Merck to discuss Zostavax with reporters. Neil Miller notes how this truly should be considered
unacceptable:
This questionable practice lowers
public confidence in the high ethical standards that should be required and are
expected from the custodians of our healthcare system. It also encourages
public cynicism towards media coverage of all vaccine-related news.
How can we trust any claim
pertaining to vaccine safety and efficacy when custodians of our healthcare
system are receiving money from the drug companies they are commissioned to
oversee? A functional system of healthcare checks and balances is imperative.
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