Was the Seasonal Flu Shot Risk a Scare?

Canadian research suggested this week that the seasonal flu vaccination may increase the risk of catching the H1N1 pandemic strain, but government officials said such a pattern has not been found in the U.S., the Centers for Disease Control and Prevention said. The unpublished work appears to suggest that people who had been vaccinated against last year's seasonal flu were about twice as likely as others to catch the pandemic strain when it appeared this spring. But statistics from the CDC do...Full Story
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