An health official wearing protective gear culls a bird at a poultry farm after a naturally occurring bird flu virus was detected near Agartala, India, in January. Sushanta Das/AP hide caption

itoggle caption Sushanta Das/AP

Lipitor, and other cholesterol-fighting drugs like it, will carry new instructions about risks. Paul Sakuma/AP hide caption

itoggle caption Paul Sakuma/AP

Connor Perruccello-McClellan, a senior at Providence Country Day School in Rhode Island, has been vaccinated against HPV, something less than 1 percent of U.S. males can say. Richard Knox/NPR hide caption

itoggle caption Richard Knox/NPR