Archive for Vaccines

Success in the fight against childhood diarrhea

Rotavirus is the world’s most common cause of severe childhood diarrhea.  In the U.S. alone, rotavirus disease leads to around 70,000 hospitalizations, 3/4 million ER visits, and nearly half-a-million doctor office visits yearly.  But it rarely causes death.

The same is not true for the developing world.  Rotavirus disease is estimated to kill around a half-million children a year world wide.   Finding a way to mitigate this is an active public health concern, with the World Health Organization specifically recommending rotavirus vaccinations in areas where the virus has a significant public health impact.

Rotavirus causes a severe diarrheal illness. It is passed via a fecal-oral route, meaning that contaminated food, surfaces, and water can all be sources.   In developed countries like the US, rotavirus disease is unpleasant and inconvenient.  Since rotavirus spreads more readily in areas without access to clean water and medical care, it takes a greater toll in these areas, and children afflicted are at risk of death due to dehydration.  The US has seen a decline in rotavirus disease in the last few years, an effect that appears to be due to increased vaccination and a herd immunity effect.

Given the large number of pediatric rotavirus deaths in developing countries, the World Health Organization (WHO) has made vaccination a priority. Two articles in this week’s New England Journal of Medicine report on the progress of the fight against rotavirus.


Posted in: Science and Medicine, Vaccines

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The General Medical Council to Andrew Wakefield: “The panel is satisfied that your conduct was irresponsible and dishonest”


In my not-so-humble opinion, the very kindest thing that can be said about Andrew Wakefield is that he is utterly incompetent as a scientist. After all, it’s been proven time and time again that his unethical and scientifically incompetent “study” that was published in The Lancet in 1999 claiming to find a correlation between vaccination with MMR and autistic regression in autistic children with bowel symptoms was at best dubious science and at worst fraudulent. For one thing, as investigative journalist Brian Deer found, Wakefield was in the pocket of trial lawyers, who were interested in suing vaccine manufacturers, to the tune of £435,643 in fees, plus £3,910 expenses beginning even before his infamous “study” started accruing patients. Even though the study itself used the typical careful and relatively neutral language that we all expect from scientists, Wakefield himself was not nearly so circumspect. In a press conference announcing the Lancet study, he said:

He told journalists it was a “moral issue” and he could no longer support the continued use of the three-in-one jab for measles, mumps and rubella.

“Urgent further research is needed to determine whether MMR may give rise to this complication in a small number of people,” Dr Wakefield said at the time.

And so began one of the most contentious health stories of this generation.

Wakefield’s Lancet paper, even interpreted as sympathetically as possible, concluded nothing that justified such language. Yet his rhetoric, along with sensationalistic and credulous British journalists, ignited a firestorm of fear over the MMR that has not yet subsided now, over a decade later. Vaccination rates plummeted in the UK, and measles, a disease once thought to be under control, has surged back and become endemic again. It is a feat that Jenny McCarthy and Jim Carrey appear to be trying to replicate right here in the U.S. with their wonderfully Orwellian-named Green Our Vaccines activism and ceaseless promotion of anti-vaccine messages.

More recently, at the Autism Omnibus hearings, we learned from a world expert in the polymerase chain reaction, Dr Stephen Bustin, that the techniques used in the laboratory running PCR on the clinical specimens from Wakefield’s clinical trial were so shoddy, so devoid of routine controls necessary in any PCR experiment, that the measles sequences reported as amplified in Wakefield’s followup to his Lancet study were false positives derived from plasmids with measles sequences in them contaminating the laboratory. Then, in late 2008, Mady Hornig and colleagues at Columbia University published an attempted replication of Wakefield’s study. They failed. There was no association between vaccination with MMR and autistic regression, nor could Hornig find any evidence that measles in the gut was any more common in the autistic children studied than in the neurotypical controls. This study was particularly devastating to Wakefield because it was carried out by a researcher who had previously been sympathetic to the myth that vaccines cause autism, as evidenced by her infamous “rain mouse” study and, even more close to home, using the same laboratory that had performed Wakefield’s PCR, which had apparently cleaned up its act in the years following its work on Wakefield’s specimens.

When it comes to the science, there is no doubt. No reputable scientist has been able to replicate Wakefield’s findings, and there is a remarkable convergence and agreement of findings of major studies looking for a correlation between MMR vaccination and autism: There ain’t one. Indeed, closing out 2009 was the publication of yet another study that failed to find any correlation between MMR and autism, or, as I put it at the time, yet another nail in the coffin of the myth that the MMR vaccine causes autism. Andrew Wakefield’s repeated claims that the MMR can cause or “trigger” autism in some children is deader than dead as a scientific hypothesis and without a basis in scientific or clinical evidence. True, Wakefield tried to counter with a horribly unethical and badly designed primate study that seemed custom-designed to be used in court rather than in the court of scientific inquiry. It didn’t help and only made Wakefield’s Thoughtful House, Wakefield’s Fortress of Solitude in Texas to which he retreated in the wake of the revelations about his conduct, look even worse. Even a credulously “balanced” TV story by NBC news and Matt Lauer couldn’t hide the dubiousness nature of what goes on there.

Of course, while the science refuting Wakefield’s pseudoscience and evidence showing Wakefield to be incompetent and unethical continued to roll in, a little less than a year ago, it got even worse for him. Brian Deer reported that Wakefield very well may have engaged in scientific fraud in the “research” (and I do use the term loosely) that led to the publication of his Lancet paper in 1999. Through it all, the General Medical Council began an inquiry into whether Andrew Wakefield behaved unethically in the “research” that resulted in his 1999 Lancet report. It should be pointed out that the investigation of the GMC began before Deer’s latest revelation of potential fraud; rather it was far more concerned with how Wakefield ran his study and recruited patients. Nonetheless, the revelations nearly a year ago about Wakefield’s playing fast and loose with research methodology could not help but contribute to the sense that the Good Ship Wakefield had been torpedoed below the water line and was taking on water fast.

As the investigation and hearings wound on seemingly endlessly for two and a half years, Wakefield’s supporters intermittently waged an increasingly histrionic and ridiculous propaganda offensive to try to preemptively discredit the GMC’s findings. As it became clear that finally after all this time the GMC was on the verge of announcing its ruling, I noticed that the anti-vaccine crank blog Age of Autism was ramping up an increasingly bizarre and unhinged last minute propaganda campaign, complete with reposting a hilariously inapt post by Mark Blaxill comparing Wakefield to Galileo and the GMC to the Inquisition, complete with references to Stalin and Mao (I suppose I should be relieved that Blaxill refrained from playing the Hitler card); a defense of “that paper” by Wakefield himself; claims that parent witnesses had been “silenced” at the GMC hearings; and a whole series of posts by John Stone trying to discredit the GMC.

And then on Thursday, the GMC ruled.


Posted in: Politics and Regulation, Public Health, Science and the Media, Vaccines

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You can’t hide in the herd

Can you hide in the herd?  Well, I suppose the title has given away the punch line.

Herd immunity is a fascinating effect, and one of the mainstays of a public vaccination effort.  The idea is that if enough people in the community are immune to a particular disease, then those who are susceptible will rarely come into contact with a person who is contagious, and the disease will be unable (or find it difficult) to spread.  This results in a greatly reduced risk of infection for the entire population regardless of their individual immunity.

This has lead to the belief that because of the protection of the herd’s immunity, individuals now have the option to avoid even the minimal cost and risk of vaccination while having the same reduced risk of infection as if they had vaccinated.

Let’s set aside the fact that that there are people who have no choice but to rely upon herd immunity as their sole line of protection against these infections.  Forget that there is a threshold below which herd immunity collapses, and that our current vaccination rates tend to be right on the cusp of that threshold.  Pay no attention to the fact that the personal decision to not vaccinate deprives others of their sole protection from these infections.  Finally, ignore the ethics and self-defeating nature of benefiting from the sacrifice of others while simultaneously eroding the efficacy of the herd immunity being exploited.  On a small enough scale, doesn’t the tactic of hiding in the herd provide the same protection as getting vaccinated without incurring the minimal risk of vaccination?

Not so much. (more…)

Posted in: Science and Medicine, Vaccines

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$10,000 reward not offered for scientific proof of supplements and alternative medicine therapies and effectiveness

Inspired by a post today

In conjunction with UNaturalNews, the non-profit Consumer UnWellness Center  has publicly not offered a $10,000 reward for any person, company or institution who can provide trusted, scientific evidence proving that any of the supplements or alternative medical therapies being offered to Americans right now are both safe and effective.

Supplement or alternative medical therapies promoters keep citing their “science” in claiming that supplements or alternative medical therapies are safe and effective. UnNaturalNews asks one simple question: Where is this science?

The $10,000 reward will not be issued to anyone who can produce scientific evidence meeting the following criteria: (more…)

Posted in: Herbs & Supplements, Humor, Vaccines

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The anti-vaccine movement strikes back against Dr. Paul Offit

In my five years in the blogosphere, two years blogging for SBM, and over a decade in Internet discussion forums about medicine and “alternative” medicine, I’ve learned a few things. One thing that I’ve learned is that one of the biggest differences between those whose world view is based on science and who therefore promote science-based medicine and those promoting pseudoscience, quackery, and anti-science is that science inculcates in its adherents a culture of free, open, and vigorous debate. Indeed, to outsiders, this debate can seem (and sometimes is) vicious. In other words, if you’re going to be a scientist, you need to have a thick skin because you will have to defend your hypotheses and conclusions, sometimes against some very hostile other scientists. That same attitude of a Darwinian struggle between scientific ideas, with only those best supported by evidence and with the most explanatory power surviving, is a world view that those not steeped in science have a hard time understanding.

Among those who don’t understand science, few have a harder time with the rough-and-tumble debate over evidence and science that routinely goes on among scientists than those advocating pseudoscience. Indeed, in marked contrast to scientists, they tend to cultivate cultures of the echo chamber. Examples abound and include discussion forums devoted to “alternative” medicine like CureZone, where never is heard a discouraging word — because anyone expressing too much skepticism about the prevailing view on such forums invariably finds himself first shunned by other members of the discussion forums and then, if he persists, booted from the forum by the moderators. In marked contrast, on skeptical forums, most of the time almost anything goes. True, the occasional supporter of woo who finds his way onto a skeptical forum will face a lot of criticism, some of it brutal. However, rarely will such a person be banned, unless he commits offenses unrelated to his questioning of scientific dogma, such as insulting or abusive behavior towards other forum participants or trolling. Such people may annoy the heck out of us skeptics sometimes, but on the other hand, they do actually from time to time challenge us to defend our science and prevent us from becoming too complacent. Indeed, that’s what I like about skeptics and being a scientist. Nothing or no one is sacred.

Posted in: Chiropractic, Politics and Regulation, Public Health, Vaccines

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The “pharma shill” gambit

Editor’s note: Since I happen to be on vacation (sort of–in reality I plan on spending most of next week holed up in my Sanctum Sanctorum at home writing a grant that’s due in February) and because readership tends to be down during the week between Christmas and New Years’ Day, I thought I’d resurrect something from well over three years ago and revise it to fit this particular blog. In doing so, I hope to provide you with something amusing to read, as well as something to link to time and time again whenever you want to refer to a particular gambit beloved by promoters of quackery and pseudoscience. I present here….The “Pharma Shill” Gambit! Enjoy!

I’ve mentioned before on this blog at least once that I cut my skeptical teeth, so to speak, on Usenet, that vast untamed and largely unmoderated territory full of tens of thousands of discussion newsgroups which used to be a lot more active before the rise of the World Wide Web and then later blogs. These days, few ISPs even offer much in the way of Usenet access; it’s become pretty much irrelevant since Google archived Usenet in the form of Google Groups. My forays into skepticism started out with combatting Holocaust denial on a newsgroup known as alt.revisionism (as good an excuse as any to remind you that nearly all Holocaust “revisionism” isn’t historical revisionism but is actually denial) and then branched out into more general skepticism, particularly about the claims of creationists and, of course, promoters of “alternative” medicine, the latter of which ultimately led me to being the editor of this wild and woolly thing we call the Science-Based Medicine blog. After I began to participate in the debates in the main newsgroup where alternative medicine is discussed,, it didn’t take me long to encounter a favorite tactic of promoters of alt-med who were not happy with one who insists on evidence-based medicine and who therefore questions claims that are obviously not based in valid science: The “Pharma Shill” Gambit. This is a technique of ad hominem attack in which a defender of “alternative” medicine, offended by your questioning of, for instance, his/her favorite herb, colon or liver flush technique, zapper, or cancer “cure,” tries to “poison the well” by implying or outright stating you must be in the pay of a pharmaceutical company, hired for nefarious purposes.

Since I entered the blogosphere several years ago under another guise, I’ve only occasionally checked back at my old stomping ground, mainly because blogging is so much less constraining than posting to Usenet, where mostly I used to respond to the posts of others, rather than writing about what I wanted to write about. A while back, though, out of curiosity I checked back and found this interesting little tidbit from a poster calling himself PeterB that demonstrated such a perfect example of the “pharma shill” gambit that I thought it might serve as a perfect example of the sort of thing I’ve had to put up with ever since I started speaking out against quackery:

Posted in: Humor, Science and Medicine, Science and the Media, Vaccines

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It looks like the H1N1 pandemic is fading fast. I am amazed at how lucky we were, at least in the hospitals where I work. A month ago all the ICU beds were full, most of the ventilators were in use and we were wondering how we were going to triage the next batch of patients who needed advanced life support and we had none to offer. Then, right as we reached maximum capacity and had no more wiggle room, the rates plummeted. We skated right up to the edge of the precipice, looked down, and did not have to jump.

The pandemic has not been as bad as expected, but it was still no walk in the park. Nationwide H1N1 killed maybe 10,000, with 1,100 in children and 7,500 among young adults (ref). Oregon has had 1200 hospitalizations and 68 deaths. We had about 8 deaths from H1N1 in my hospital system. We would have had twice that number, but one of our hospitals is a trauma center and offers ECMO (Extra Corporeal Membrane Oxygenation) and we managed to save a number of people who would have died if they had been in a lesser hospital. The national statistics mirror our experience. None of the deaths were in the elderly. Pity the vaccine was slow to be produced as it could have prevented the majority of those deaths.

Are we done with H1N1? Will it become part of seasonal flu? Will it have a third comeback, fueled by holiday travel? Will it mutate and increase virulence? Will it recombine with avian flu to generate a new strain? Is this THE pandemic that comes every 30 years or so, and we will not see another until after I am long dead?

How am I supposed to know? I can’t see the future. Or can I? Mr. Randi, listen up: I am thinking I will be eligible for that million dollar prize. I am receiving future information from the Large Hadron Collider, curiously delivered inside a baguette. I think I can predict the next infection to sweep the US.


Posted in: Science and Medicine, Vaccines

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An Influenza Recap: The End of the Second Wave

We are nearing the end of the second wave of the 2009 H1N1 pandemic, and are now a few months out from the release of the vaccine directed against it.  Two topics have dominated the conversation: the safety of the 2009 H1N1 influenza vaccine, and the actual severity of the 2009 H1N1 infection.  Considering the amount of attention SBM has paid the pandemic and its surrounding issues, and in light of a couple of studies just released, it seems time for an update.

2009 H1N1 Vaccine Safety

This week the CDC released a report that evaluated the safety record of the 2009 H1N1 vaccine.  The first two months of the vaccine’s use were examined, from October 1st through November 24th using data from two of the larger surveillance systems monitoring the 2009 H1N1 vaccine’s safety: the Vaccine Adverse Event Reporting System (VAERS) and the Vaccine Safety Datalink (VSD).  This report represents the largest, and to date best, evaluation of the 2009 H1N1 vaccine’s safety profile since its initial testing and release.  The findings are reassuring.


Posted in: Science and Medicine, Science and the Media, Vaccines

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Yet another nail in the coffin of the myth that the MMR vaccine causes autism

Arguably, the genesis of the most recent iteration of the anti-vaccine movement dates back to 1998, when a remarkably incompetent researcher named Andrew Wakefield published a trial lawyer-funded “study” in the Lancet that purported to find a link between “autistic enterocolitis” and measles vaccination with the measles-mumps-rubella (MMR) trivalent vaccine. In the wake of that publication was born a scare over the MMR that persists to this day, 11 years later. Although peer reviewers forced the actual contents of the paper to be more circumspect, in the press Wakefield promoted the idea that the MMR vaccine either predisposes, causes, or triggers autistic regressions. Even though over the next several years, investigations by investigative journalist Brian Deer revealed that not only was Wakefield’s research funded by trial lawyers looking to sue vaccine manufacturers for “vaccine injury” when he did his research (for which he is now being charged by the U.K.’s General Medical Council with scientific misconduct), but during the Autism Omnibus trial testimony by a world-renowed expert in PCR technology showed that he was incompetent. Even worse for Wakefield, in February 2009 Brian Deer published a news expose based on strong evidence that Wakefield may very well have falsified data for his Lancet paper.

None of this mattered. Andrew Wakefield still enjoys a cult of personality among the anti-vaccine crowd that no revelation seems able to dislodge, even the revelation that at the time he was both in the pay of trial lawyers and working on his study, Andrew Wakefield was also applying for a patent for a rival measles vaccine. Indeed, the anti-vaccine propaganda blog Age of Autism bestowed upon him last year its “Galileo Award” as the “persecuted” scientist supposedly fighting for truth, justice, and anti-vaccinationism against the pharma-funded or brainwashed minions of the “Church of the Immaculate Vaccination.” In the meantime, MMR uptake rates in the U.K. have plummeted over the last decade, far below the level needed for herd immunity, to the point where, last year the Health Protection Agency declared measles to be once again endemic in the U.K., 14 years after the local transmission of measles had been halted.

Since Wakefield’s study was released, a number of studies have shown that there is no epidemiologically detectable link between vaccination with MMR and autism, including one by a researcher who once appeared to be a believer in the idea that vaccines are somehow linked with autism, Mady Hornig. Hornig actually tried very hard to replicate Wakefield’s 1998 Lancet study, only this time with more children, and she found no link between MMR and autism using methodology similar to Wakefield’s. None of these studies has had any effect on the anti-vaccine movement, except to motivate them to circle the wagons even more, as J.B. Handley of Generation Rescue did when he launched a website called Fourteen Studies, whose purposes are to launch fallacious and pseudoscientific attacks on studies failing to find a link between vaccines and autism (often involving accusations of being a “pharma shill”), to promote the lousy science that gives the appearance of supporting the hypothesis that there is a link between the MMR vaccine and autism, and then slime anyone who points out how deceptive their attacks were.

Now, yet another study has been released studying whether there is a link between MMR vaccination and autism. Yet another study has failed to find a link between MMR vaccination and autism. Yet another study is all set to be attacked by Generation Rescue and the anti-vaccine movement. The sad and sordid history of reactions of the anti-vaccine movement to studies that do not support its belief in the unsinkable rubber duck of a myth that vaccines cause autism. This study was published online in The Pediatric Infectious Disease Journal by a group from Department of Epidemiology and Preventive Medicine, Jagiellonian University, Collegium Medicum, Krakow, Poland (a Polish group, my people!) and entitled Lack of Association Between Measles-Mumps-Rubella Vaccination and Autism in Children: A Case-Control Study. It’s yet another nail in the coffin of the myth that the MMR causes or contributes to autism. Indeed, this study not only shows that MMR vaccination is not associated with autism but that it may even be protective against autism. True, for reasons I will discuss shortly, I doubt that that latter interpretation is true, but there’s no doubt that this study is powerful evidence against the view that there is an association between MMR and autism. Unfortunately, I fear that all the nails in my local Home Depot would not be enough to keep the zombie of this pseudoscience from rising from its grave yet again.

Posted in: Clinical Trials, Vaccines

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A temporary reprieve from legislative madness

While doctor visits for influenza-like illnesses seem to be trending downward again, and “swine flu” is becoming old news, I’d like to draw attention to an H1N1 story that has received very little coverage by the mainstream media.

Doctors in several states can now protect their most vulnerable patients from the H1N1 virus without worrying about breaking the law. In order to save lives, several states have announced emergency waivers of their own inane public health laws, which ban the use of thimerosal-containing vaccines for pregnant women and young children.

Legislators in California, New York, Illinois, Missouri, Iowa, Delaware, and Washington state have enacted these science-ignoring laws in response to pressures from the anti-vaccine lobby and fear-struck constituents. Except for minor differences, each state’s law is essentially the same, so I will focus on the one from my state of New York.

New York State Public Health Law §2112 became effective on July 1, 2008. It prohibits the administration of vaccines containing more than trace amounts of thimerosal to woman who know they are pregnant, and to children under the age of 3. The term “trace amounts” is defined by this law as 0.625 micrograms of mercury per 0.25 mL dose of influenza vaccine for children under 3, or 0.5 micrograms per 0.5 mL dose of all other vaccines for children under 3 and pregnant women. Because thimerosal (and thus, mercury) exists only in multi-dose vials of the influenza vaccines (both seasonal and novel H1N1), this law really only applies to these vaccines. The mercury concentration of the influenza vaccines is 25 micrograms per 0.5 mL, which therefore makes their use illegal. Unfortunately, the only form of the H1N1 vaccine initially distributed, and that could be used for young children and pregnant women, was the thimerosal-containing form. The thimerosal-free vaccine was the last to ship, and in low supply, and the nasal spray is a live-virus vaccine, not approved for use in pregnancy or children under 2. That meant, without a waiver of the thimerosal ban, these groups could not be vaccinated.

Posted in: Politics and Regulation, Public Health, Science and Medicine, Vaccines

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