Why overuse of antibiotics is a massive, 'staggering' problem in health care

A new report from the Centers for Disease Control and Prevention indicates that we are losing ground in the battle against so-called superbugs -- the harmful or deadly bacteria resistant to nearly all our antibiotic defenses. William Brangham talks to Dr. Arjun Srinivasan, who works on infection control at the CDC and helped compile the report, about how we can prevent these dangerous infections.