An artist on Rio de Janeiro's Copacabana beach puts the final touches on a sand sculpture of the assassin bug, which spreads Chagas disease. The sculpture was part of an event in 2009 commemorating the 100th anniversary of the discovery of the disease. Vanderlei Almeida/AFP/Getty Images hide caption

itoggle caption Vanderlei Almeida/AFP/Getty Images

A customer walks out of a Walgreens store in New York City. Adam Rountree/Bloomberg via Getty Images hide caption

itoggle caption Adam Rountree/Bloomberg via Getty Images

Watson Pharmaceuticals, a maker of generic drugs, is rolling out generic Lipitor, or atorvastatin, under a deal with Pfizer. Bill Gallery/AP hide caption

itoggle caption Bill Gallery/AP

A nurse burps a baby after he's been fed, circa 1955. Doctors say that for babies with extreme reflux, off-label use of heartburn drugs can sometimes help. But frequently changes to the mother's diet can be a simpler fix. George Heyer/Three Lions/Getty Images hide caption

itoggle caption George Heyer/Three Lions/Getty Images