Wednesday, May 5, 2010

Fearmongering against vaccines

It's worrying, but the anti-vaccination movement has had a significant impact on vaccination rates in the U.S. I don't believe that herd immunity has been compromised yet, but it must be getting dangerously close to that point. Herd immunity is probably a major reason why people can get away with not vaccinating their children (and then possibly heralded as evidence that vaccinations don't help). Once that's compromised, though...

The main problem is that the risks of something bad happening as a result of a vaccination is not compared to the risk of something bad happening with contracting a preventable disease. Vaccines are released for consumption only after they meet the requirement that only 1 in 100000 people will suffer adverse effects. For example, a batch of faulty H1N1 vaccine was recalled when 1 in 20000 people suffered severe allergic reactions. The H1N1 influenza had a death rate of 3 in 10000 people (0.03%), so even the faulty vaccine was safer than being infected by H1N1.

Frankly, a disease that is roughly as harmless as a vaccine wouldn't strike enough fear into the public for anyone to bother with making a vaccine in the first place (with regards to the "profit as a motive for pushing vaccines").

Still, the image of some horrible allergic reaction or autism (despite follow-up studies failing to find any statistical correlation) is enough to make people fear one of the greatest (in terms of benefiting the health of the species as a whole) medical achievements in human history.

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