This Year's Flu Vaccine Falters In Protecting Elderly

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This year's flu shot looks like it's unusually poor at protecting the elderly. The flu vaccine's only about 27 percent effective overall for those ages 65 and older and just 9 percent effective against the flu strain causing the most illness, according to the federal Centers for Disease Control and Prevention. Melissa Block talks to Rob Stein.

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Copyright NPR. View this article on npr.org.