Flu vaccine just 36% effective this season, CDC reports

Flu season is still raging in the United States, yet already it ranks among the most difficult in recent years. One reason: This year's vaccine has been just 36% effective against both A and B virus strains, the US Centers for Disease Control and Prevention estimated in Thursday's Morbidity and Mortality Weekly Report.
Source: CNN.com - Health - Category: Consumer Health News Source Type: news