by Rob Stein
Feb 22, 2013 (All Things Considered) — 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.
Missing some content? Check the source: NPR
Copyright(c) 2014, NPR