A “perplexing” Canadian study linking H1N1 to seasonal flu shots is throwing national influenza plans into disarray and testing public faith in the government agencies responsible for protecting the nation’s health.
Distributed for peer review last week, the study confounded infectious-disease experts in suggesting that people vaccinated against seasonal flu are twice as likely to catch swine flu.
(Read more from theglobeandmail.com)
its still early, but this is pretty unlikely to mean anything at all. people who get flu shots are much more likely to be exposed to h1n1, leading to higher rates of infection. also, the same pattern has not been observed in the us or australia.