I found it strange that despite all the evidence to the contrary, people are so
paranoid about the H1N1 vaccine. But it seems
a lot of this nervousness stemmed from a 1976 vaccine fiasco, where the government initiated a national vaccination program against a pandemic, by the same H1N1 strain we're seeing today, which never materialized (one person was killed by the strain and 13 were hospitalized).
But in the 48 million Americans (or 24% of the population) who were vaccinated that year, 532 developed
Guillain-Barré syndrome, where a person's own immune system attacks the nerve system which can lead to paralysis. Most recovered but 25 died with some suffering lasting damage. This fiasco is what Glenn Beck bases his skepticism of the H1N1 vaccine on (October 8th, 2009 in his radio program), which Politifact then disproves and
takes apart nicely.
There's only been findings of a causal relationship between the 1976 vaccine and GBS, with no one knowing how it happened (scientists don't even know how GBS is caused, in general). Vaccines, however, have come a long way in the last 30 years, and there's been
millions of Americans since who have been vaccinated every year with no link to GBS. Not to mention you're more likely to get GBS from the flu itself than from its vaccine, according to
a study this January, and your best chance of avoiding GBS is to get vaccinated, according to
another study in 2007. Note that this is also a published study, unlike the unpublished studies naysayers dig up.
So
NewScientist sums up the odds this way:
"The risk of getting Guillain-Barré from a flu vaccine is almost certainly less than 1 in a million; the risk of getting it from flu itself is more than 40 in a million. Swine flu is estimated to have killed 800 people in the US already, or more than 2 in every million so far. And during the first wave of swine flu this summer,
1 out of every 20,000 children aged 4 or under in the US ended up in hospital."
But obviously doubts linger from this, as the 1976 fiasco sparked over $100 million in lawsuits against the federal government, since to quicken the vaccination process the government granted immunity to vaccine manufacturers while shifting the burden liabilities on itself. Still,
litigation worries decimated vaccine manufacturers: in the 1970s there were 25 vaccine manufacturers in the US but by 2004 there were only five.
But while the manufacturers in 1976 didn't take shortcuts, the US government has really stayed in the safe side, sticking with tried-and-true methods when it comes to vaccine. So I'm referring to those vaccine skeptics who keep repeating about the dangers of
adjuvants (which makes vaccines more potent) and
thimerosal (a preservative).
The US has sacrificed quantity for
adjuvant-free vaccines (while Europe allows adjuvants) and evidence of the danger of thimerosal in vaccines is lacking. Not to mention there are H1N1 vaccines that are thimerosal-free anyway for those who are still concerned. SciAm has an
interesting piece about how anecdotal evidence can undermine scientific results.
This isn't to say concern about H1N1 isn't warranted. H1N1 is truly a strain to be reckoned with. It really does hit the younger population more than the elderly - harking back to the 1918 flu where young people died violently by the masses - where 79 percent of US cases are younger than 30, and 2 percent are older than 65. Pregnant women are also in that high risk group with 6 percent of US cases being pregnant women while pregnant women make up about 1 or 2 percent of the population, although strangely there's
no data on how hard pregnant women are hit with seasonal flu.
And it turns out H1N1's a new strain which binds deeper in the lungs than ordinary flu.
But what's interesting is that this "younger people" phenomenon might be attributed to the 1976 vaccine as well as the 1918 flu. According to a
study last month (published by the New England Journal of Medicine) by several researchers, a senior author being CDC Influenza division member Jacqueline Katz, those who were around to be exposed to the 1918 as well as the 1976 strains (both in the H1N1 family) "have some level of cross-reactive antibody" to the current 2009 strain, finding that folks older than 60 are more resistant to this year's H1N1 virus, and
those who had the 1976 vaccination are even more resistant. Funny how those skeptics missed all this, hm?