Philip Alcabes discusses myths of health, disease and risk.

Vaccine Crusaders Arm for Battle

I’m not sure I want to feel sorry for Andrew Wakefield — a nudnik, possibly even a charlatan.   And although I worry that MMR vaccine, especially as part of the intense dosing schedule for childhood vaccination overall, might have bad effects on some kids’ immune systems,  I’m not categorically opposed to immunization.

Still, it’s hard to avoid wondering:  is Wakefield right when he alleges that he’s being persecuted by the vaccine industry?

Last week, I discussed the BMJ article by Brian Deer asserting that Wakefield’s research was fraudulent, and the accompanying editorial supporting immunization.  At that point, I thought that the BMJ pieces were, together,  a one-off.

I was wrong.  In fact, it looks this week like the vaccine industry has armed some of its main warriors and sent them out to do battle.

The Battle Against Anti-Vaccinationism

In the Jan. 13th issue of the New England Journal of Medicine, two powerful chiefs, Gregory Poland and Robert M. Jacobson, claim that there’s an “age-old struggle” to make vaccines available.  Their aim is to vilify the “antivaccinationists” who “have done significant harm to the public health.” [Note the use of the holy article in this phrase, to signal just how sacred these warrior-priests hold "the" public health to be.]

The Poland-Jacobson piece is pure propaganda.  Theirs is a tale of heroic struggle on the part of ever-embattled Believers against the satanic forces of Antivaccationism — who have been trying “since the 18th century” to shake people’s faith in the vaccine gospel.  And nowadays the nasty antivaccinationists are using scarily modern forms of communications, such as TV and the Internet, in order “to sway public opinion and distract attention from scientific evidence.”

Wow:  TV and the web.  Sounds satanic alright.

I guess I shouldn’t be surprised that a couple of crusaders make their own work sound salvationist.  What troubles me is that they make it sound like they’re disinterested do-good-ers.

In fact, Poland and Jacobson are in bed with Big Pharma.  Poland runs the Mayo Clinic’s Vaccine Research Group.  Although as far as I can tell, Poland and Jacobson are not currently in the direct pay of the vaccine manufacturers, they and the VRG have benefited handsomely from vaccine makers’ largesse.

For instance, Poland’s and Jacobson’s work on human papillomavirus vaccine, as they acknowledge in a 2005 Mayo Clinic Proceedings paper, was funded by Merck, and their co-workers were Merck employees.  Later, in conjunction with a continuing medical education module on meningococcal vaccine in 2009, Poland disclosed the following ties:

Sources of Funding for Research: Merck & Co, Inc, Novavax, Inc, Protein Sciences Corp; Consulting Agreements: Avianax, LLC, CSL Biotherapies, CSL Limited, Emergent Biosolutions Inc, GlaxoSmithKline, Merck & Co, Inc, Novartis Vaccines, Novavax, Inc, PowderMed Ltd

And on his disclosure form for this week’s NEJM article Poland acknowledges funding from Pfizer and Novartis for vaccine studies.

So when Poland and Jacobson write that our society “must continue to fund and publish high-quality studies to investigate concerns about vaccine safety,” they’re really talking about preserving their livelihood.  It’s very much in their interest to ensure a steady flow of such funding.

And when they say that “society must recognize that science is not a democracy in which the side with the most votes or the loudest voices gets to decide what is right,” they’re being completely disingenuous.  Because Poland and Jacobson know quite well why science is not a democracy:  in the type of research they do, it’s the big money that decides what is right.

A High Priest of Vaccine “Science”

Then there’s Paul Offit making the rounds.  Offit has been the subject of lots of attention by Age of Autism, most recently as a “denialist.” Offit probably profited somewhat from the licensing of Rota Teq vaccine, which he helped invent — although AofA’s allegation that he is therefore beholden to Merck seems unsubstantiated.

What’s obvious about Offit is that he is contemptuous of people who don’t agree with his version of truth.

Offit appeared on Lenny Lopate’s radio show in New York yesterday, and presumably will be appearing elsewhere.  His aim is to explain the “grave public health problem of vaccine avoidance.”  The “anti-vaccine movement threatens us all,” he says.  In fact, that’s the subtitle of his new book, Deadly Choices.

Where Poland and Jacobson are militant and sanctimonious, Offit sounds a note at once sentimental and officious.  It’s “tragic” that there have been measles outbreaks because of parents refusing to have their kids vaccinated, he says.  And the problem is that people just don’t understand science.  In fact, Dan Olmsted at AofA gets it quite right when he critique’s Offit’s blinkered version of science:

Anyone concerned about [possible harms of vaccination] fits Offit’s definition of anti-vaccine, because vaccines don’t cause any of them, because Paul Offit says so, a solipsism that is really quite breathtaking: “[B]ecause anti-vaccine activists today define safe as free from side effects such as autism, learning disabilities, attention deficit disorder, multiple sclerosis, diabetes, strokes, heart attacks, and blood clots — conditions that aren’t caused by vaccines — safer vaccines, using their definition, can never be made.”

I had the same reaction to Offit’s self-important — and, to my mind, unscientific — claims.  Offit shows no interest in the open inquiry that marks science.  People who don’t agree with him are uneducated, poorly informed, maybe just stupid.  And, of course, dangerous.

“Tragic” Consequences of Unbelief

On the Lopate show, Offit resorted to the now-common formula of the “tragic” consequences of parents’ belief in Andrew Wakefield.

What’s the tragedy, exactly?   It’s true that there have been outbreaks of measles in the British Isles that have been traced to parents’ refusal to have their children immunized.  An excellent review in BMJ in 2006 provided some of the data for the U.K. — including that one child died in a 2006 measles outbreak that was related to poor immunization coverage.  A few children died in Ireland in 2000.  A CDC account of a measles outbreak in California in 2008 reports that it hospitalized a few children, although none died.

It would be great if nobody ever died from an infection that could be prevented in any way.  It’s surely tragic to the parents of a child who dies from a preventable infection.   The sympathies of each of us should go out to such parents, as to those whose kids are killed by bad drivers, sports injuries, or infections for which there’s no vaccine.

But in what sense is one child’s death more of a collective “tragedy” for all of us than the other deaths that go unremarked every day?   Why is it tragic when one child dies of a vaccine-preventable infection and not when a lot of them die of poorly regulated handguns or as troops fighting wars that never endanger our leaders, only our young?

The Ramp-up of Aggression by the Vaccine Crusaders

Why are the vaccine warriors rampant now?  Perhaps the vaccine makers are terrified that the low uptake of H1N1 flu vaccine despite all the hype in 2009, along with low MMR compliance in some places (the U.K. especially), means that their profits are going to slide.  Maybe their friends, like Offit and Poland, are worried that reduced uptake of vaccines will translate into diminished research funding or fewer conferences in delicious places.

Or maybe the vaccine industry finds Wakefield so obstreperous that they can’t rest until he is destroyed. Wakefield’s no choir boy, but he might not have realized just how much control the pharmaceutical industry can exert in the U.K.

In a review essay in last week’s New York Review of Books, Simon Head points out that Big Pharma is “the only major segment of the British economy that is both world-class and an intensive user of university research,” and implies that it exerts control over both the substance and volume of U.K. research productivity, especially in medicine.  Head sees reason to believe that Pharma will “tighten its hold over scientific research in the UK” in the future.

It’s Not a War

There need be no either-or about vaccines.  If our society can live with guns and automobiles (together accounting for roughly 50,000 American deaths a year), if we tolerate alcohol, processed foods, acetaminophen, high-rise construction, and all the other things that occasionally cause harm but mostly contribute to the way of life we prefer — then we can stop calling it “tragic” when a few parents don’t have their kids immunized.

Because to call one measles death “tragic” is to further the vaccine warriors’ campaign — the campaign that pretends to be on behalf of science or healthy kids, but is really fought to protect the fortunes of vaccine makers.

The campaign protects the power of shiftless public officials who claim to be protecting the public from harm when they serve up millions of taxpayer dollars to vaccine manufacturers for barely useful vaccines (H1N1 2009), or for vaccines that are undoubtedly helpful but might be harmful in some cases and haven’t been thoroughly examined (HPV vaccine).  And who, to this day, won’t even consider the very good question that Andrew Wakefield posed in the 1990s:  is it a good idea to give kids three immunizations in a single preparation?

I had my child immunized when she was the right age for that.    But I’m not certain that absolutely everyone has to do the same.  Neither are the courts, which is why they allow exemptions from immunization for personal belief.

I don’t think measles is a menace to civilization.  I know that only a very tiny percentage of children who contract measles get dangerously sick from it, that flu vaccine doesn’t work for everyone (and isn’t an effective public health measure to stop flu outbreaks even though it can protect individuals from illness), and that varicella vaccine can make the problem of shingles worse even though it reduces the problem of chicken pox.  And so forth.

I mean that immunization is complex and fraught.  Not everyone can be expected to agree with every vaccine recommendation.   Even while some people are opposed to vaccination and refuse to immunize their kids, life will go on, and society will continue to thrive, and Paul Offit can continue to say arrogant things about “science.”

So, could someone please call off the crusade?

By Philip Alcabes | January 14th, 2011 | Categories: autism, Disease, epidemics, Health Professions, Outbreaks, Physicians, public health, science | Tags: , , , , , , , , | 2 comments

Cholera: A Shame, Not a Whodunit

Titling Maggie Fox’s article on the source of the Haitian cholera outbreak “Whodunnit?,” Reuters makes distraction the main attraction.

Finger pointing about the “cause” of the outbreak — finger pointing at Nepalese peace keepers, the UN mission, relief workers, or Haitian health workers — is a way of avoiding the fundamental problem:  insufficient political will to create working infrastructure for poor countries.  Haiti being the leading example, the cholera outbreak being the case study.

Given how shaky the living arrangements have been for many Haitians since the January earthquake, given the pre-existing destitution and the anemia of efforts to fix that, it’s a tribute to the Haitian health system that cholera didn’t break out until October.  It might have been much sooner.

But now that cholera is spreading, it seems that more energy is going into using the outbreak to whip up political animus in, and about, Haiti than to figuring out how to make sure it doesn’t happen again.

This week, the politicization of the cholera outbreak seems to get worse by the day (Crawford Kilian’s cholera coverage at H5N1 continues to keep abreast of both the cholera outbreak and the political uses it’s being put to).   I talked to John Hockenberry and Celeste Headlee about this on The Takeaway yesterday, pointing out that the problem is social crisis, not Nepalese troops.  It’s poverty, lack of adequate sanitation, poor access to clean water — not foreigners.

Here’s the segment of The Takeaway:

In contrast to the misleading headline of Reuters’ piece, what Ms. Fox covers is not the (pseudo) mystery of “who brought cholera to Haiti?”  It’s the effort by CDC, the Haitian health ministry, and PAHO to determine whether the outbreak likely started from a single source or multiple ones.

The findings are reported in the Morbidity and Mortality Weekly Report this week:  Haitian cases all carried Vibrio cholerae of the O1 serogroup, serotype Ogawa (a very common strain), with DNA of a single pulse-field gel electrophoresis pattern.  Because of the propensity for mutation or recombination events in the reproduction of bacteria, it would be extremely unlikely for different people to be carrying bacteria with the identical PFGE pattern unless they had all been exposed to an identical strain.  [N.B.  Strictly speaking, cholera is not an infection:  the illness results from poisoning by V. cholera in the intestine, not from actual infection of tissue.  Therefore I write "exposed to" rather than "infected by."]

Based on the findings so far, CDC and its partners concludes that the outbreak probably began with a single strain.

Did this strain arrive in cholera recently, or has it been around for some time and only recently came to attention as a cause of mass morbidity and mortality?  Did it arrive in a person and contaminate the environment via feces, or arrive in food or water?  Was there a single initiating exposure, or did cholera arrive inside multiple people or food items?  As Fox points out, the study can’t answer these questions.

It makes sense to seek information on how the outbreak got started in order to plan for better systems to prevent future outbreaks.  CDC is on the right track here.

But by calling this a whodunit, Reuters is pandering to people who want to inflame tempers, not spreading information about what can be done to make Haiti healthier.  Shame on you, Reuters.

By Philip Alcabes | November 19th, 2010 | Categories: epidemics, News, Outbreaks, public health | Tags: , , , | Comments Off

Plague Did Not Begin in China. And Why Should Anyone Think It Did?

Nicholas Wade, the NY Times‘s science writer, jumps the gun with a story today asserting that plague began in China.  Maybe it’s understandable:  you don’t often get a front-page story if you’re a science reporter, so once in a while you take some shaky science and turn it into an international incident.

But to understand why the story is wrong means recognizing a weakness of science as it’s often practiced today.

Wade’s claim is based on two papers published this month.  A relatively well done study by Haensch et al. in PLoS Pathogens earlier in October tested human remains from well-identified plague pits — burial sites for medieval plague victims — in different parts of Europe.  Researchers amplified DNA sequences of the plague bacterium, Yersinia pestis, at specific genetic loci, and tested to see whether the DNA matched known sequences of contemporary Y. pestis genes.

The findings published in PLoS suggest that the Black Death and perhaps subsequent waves of plague in Europe were indeed caused by Y. pestis — which would tend to debunk the theory proposed by some British researchers that the Black Death was some kind of viral hemorrhagic fever outbreak.  And they suggest that there were at least two widely different Y. pestis strains involved in different parts of Europe.  Here’s a bit of the abstract:

[O]n the basis of 17 single nucleotide polymorphisms plus the absence of a deletion in glpD gene, our aDNA results identified two previously unknown but related clades of Y. pestis associated with distinct medieval mass graves. These findings suggest that plague was imported to Europe on two or more occasions, each following a distinct route.

The main weakness here is that DNA could not be amplified from all of the plague pits the researchers studied, but after using alternative means to test the DNA debris against contemporary gene sequences the investigators concluded that the absence of genetic material reminiscent of one strain of Y. pestis was evidence that that strain was not in play in that part of Europe at the time.  Probably right, but stretching the available evidence.

It’s a common mistake, alas.  To paraphrase Karl Popper:  just because you see DNA from white swans and don’t see any DNA from black swans, doesn’t mean that black swans don’t exist.

Still, the PLoS paper is persuasive that more than one strain of the plague bacterium was circulating, and probably causing deaths, in the plague period in Europe.  Of course, it says nothing about China.

So where does the NYT reporter get his headline-grabbing story?  A paper to be published in Nature Genetics online (still embargoed at the time I’m writing, but a summary appears here) states that the sequences of plague DNA amplified from plague pit remains, as well as contemporary isolates, can be placed on a molecular clock because of the occurrence of unique mutations.  Winding the clock backward, the researchers conclude that the Ur plague organism, ancestor of all Y. pestis, came from the far east.

The molecular biology may be unimpeachable, but the inferences about history aren’t supportable by molecular evidence.  That might explain why they’re almost certainly wrong.

The problem (scientists, I hope you’re listening!) is that you may know very well what you know, but you can never know what you haven’t seen.  The hereditary tree has its roots in China.  Here is one proposed by some of the same authors in a 2004 PNAS paper:

In this set-up, isolates of Y. pestis from China seem closest to the primordial strains.

But of course, the molecular clock doesn’t take account of strains that are no longer extant.  And ones that haven’t been unearthed.  The contemporary researchers don’t see them (or don’t know how to look), so they don’t exist.

It’s a bad mistake, inferentially.  And historically.  It’s where the NYT writer goes wrong.  Almost certainly, plague did not begin in China.  It began as an enzootic infection of small mammals in the uplands of central Asia.  This is the story convincingly relayed by William H. McNeill in Plagues and Peoples a generation ago, and none of the many accounts I’ve read since then has debunked it.

Plague would have had to begin in an ecosystem in which it could circulate at moderate transmission rates with little pathogenicity among small mammals (the natural host of the bacterium).  Exactly where it started remains open to question, but it was probably in the area that is now Turkestan/Uzbekistan.  With the development of trade between that region and China, intermixing of local (central-Asian) animals with caravan-accompanying rats would have allowed Y. pestis to adapt to the latter.

Quite possibly China was the source of the first human outbreaks of plague — because the river valleys of China were settled and agricultural (therefore offering feeding opportunities for rats as well as multiple opportunities for rat-human interaction) long before Europe was.  That fact probably accounts for the biologists’ (mistaken) belief that their early samples show that Y. pestis started out in China.

But plague began as — and remains — a disease of animals.  To acknowledge that human outbreaks in China preceded the human outbreaks in Europe (the Justinian plague that began in the mid-sixth century, the Black Death that began in the 1340s, and subsequent visitations) is not the same as saying that plague originated in China.

Which it didn’t.  Plague is an animal disease from Central Asia.  Plague’s long history is the usual one:  ecosystem change, trade, animal-human interactions, alterations in climate and economic conditions, and occasional opportunities for mass human illness.   (One world, one health.)

Above all, remember that science is only capable of drawing conclusions about what scientists can observe.  Don’t be taken in by hair-raising stories.  Even in the NY Times.

By Philip Alcabes | October 31st, 2010 | Categories: climate change, Disease, epidemics, Narratives, science, Uncategorized | Tags: , , , | 3 comments

A Blog Worth Following

If you haven’t already, put Crawford Kilian’s H5N1 blog on your regular reading list.  There, while you’ll still get updates on the H5N1 avian flu virus and occasional pieces on H1N1 flu (and you can see a multitude of archived posts from 2009  filled with international material on the progress of last year’s flu — and the reaction to it), you now get a much-expanded scope, including news and commentary on the spread of infectious diseases of different sorts.

What I value about H5N1 is the tracking of the mosquito-borne viral diseases, like dengue and chikungunya as well as H1N1, that reveal the effects of the elision of ecosystem boundaries; the close attention to outbreaks that stem from changes in human-animal interactions — like the recent outbreak of plague in Tibet and, of course, H5N1; and the watch it keeps on the vaccine trade, as in yesterday’s post picking up a report in The Nation on the purchase of flu vaccine from France and one last week on a US tech company’s trials of a new flu vaccine (which won’t help the public but is, apparently, already helping the company to get richer).

The kind of close attention to the details of complex interactions amongst humans, animals, and both the natural environment and the economic one that H5N1 shows is indispensable.   It should spur more interest in wresting public health away from the simple-minded mass-vaccination schemes of medical officials in the U.S. and other wealthy countries — the point of which is usually to transfer public monies into the hands of pharmaceutical companies.  And move us to toward a more complex and inclusive view of the nature of health.

By Philip Alcabes | September 28th, 2010 | Categories: climate change, Disease, epidemics, Health Professions, News, Outbreaks, Physicians, public health | Tags: , , , , , , , , | Comments Off

Public Health Priorities: Follow the Money

Thanks to Crof at H5N1 for bringing to our attention a strong editorial in yesterday’s Bangkok Post.   The editorialists note that H1N1 preparedness efforts were not always successful and that WHO, fresh from announcing that the H1N1 pandemic is over, is now promoting fears of renewed outbreaks of H5N1 (avian) flu.  The editorial continues:

While it would be foolish to dismiss such warnings as this latest one on bird flu, it is important we keep a sense of proportion and not let them distract us from countering the unfashionable but widespread potential killers such as tuberculosis, HIV/Aids, diabetes, cancer, dengue and malaria. These are the diseases already causing widespread illness and economic harm….

Rather than competing for cash, the threat from newer diseases should serve as a catalyst to combat existing epidemics.

Competing for cash is key.

Funding for TB languishes, dengue incidence expands, more people with the AIDS virus are getting treated but new infections continue to occur, water scarcity (and displacement because of wars and natural disasters) makes diarrheal illness a persistent problem, and malaria transmission continues to threaten billions of people who live in tropical and subtropical regions — but flu preparedness dominates the public health scene.   Why?

Here’s the infernal logic of WHO and the public health officers of wealthy countries (U.S., U.K., etc.):  (a) At the start of the H1N1 outbreak in 2009, a sensible worst-cast forecast was about a million deaths worldwide; the more likely scenario was well under 500,000 deaths.  (b) TB + malaria + diarrhea + AIDS together kill 6 or 7 million people a year.   (c) Immunization against flu is notoriously variable in its effectiveness and mass immunization is almost never effective (except if instituted in an isolated population well before the flu virus makes inroads into the population).

Sounds like it would be worth it to pump lots of resources into reducing the incidence of malaria, TB, AIDS, and diarrhea.  But that’s hard.  It takes political will.  Whereas immunizing against flu is easy: it just takes money.  And national health officials were eager (it turned out) to transfer billions of dollars, pounds, and euros into the hands of vaccine manufacturers in order to be able to immunize their populations against H1N1 flu.

To an official whose job is to watch out for the needs of the economic machine, immunization pays.

One flu vaccine manufacturer estimates that in the U.S., employers lose $2.1 billion each year in productivity because of flu-related absences from work.  Let’s be skeptical about this estimate, coming as it does from one of the beneficiaries of federal largesse in response to flu fears.  But the point is clear enough:  it was a great boon to the private sector to have the federal government spend $1.6 billion of taxpayer money on flu vaccine in 2009 even though the outbreak was mild and vaccine did virtually nothing to stop it.  Because with the feds footing the bill, the burden on corporations was slight, whereas the private sector would have lost a lot of money if many Americans had fallen ill with flu.

It’s not just the vaccine manufacturers and pharmaceutical companies who stand to capitalize on the absurd calculus of protecting American businesses instead of poor people’s lives:  scientists do, too.

Robert Webster is an eminent virologist who has become dean of those American scientists who purport to be able to foresee a future flu catastrophe.  Perhaps he’s right, but of course nobody knows.  So when Webster says

We may think we can relax and influenza is no longer a problem. I want to assure you that that is not the case,

as he just did in a meeting in Hong Kong, it’s a good sign that the preparedness crusaders are worried about their funding.  They should be.

The preparedness crusaders have been unmasked as shameless shills for the private sector,  even if the vaccine and antiviral manufacturers aren’t paying them directly.  And the ones who are scientists have been revealed as self-important promoters of their own research — so fiercely protective of their own turf that they might use their prestige and the imprimatur of science to hoodwink officials into ignoring the more serious, and more certain, problems of the developing world.

Let’s hope that more opinion makers take the stand that the editors in Bangkok just did.

By Philip Alcabes | September 5th, 2010 | Categories: Disease, epidemics, Outbreaks, public health, Uncategorized | Tags: , , , , , | Comments Off

« Older Entries
Newer Entries »