Bird Flu Mutations Could Make It Easier To Spread In Humans

There's still no evidence of bird flu passing from person to person but health experts warn that mutations of the virus could make it more likely to spread between humans.
The CDC is pushing back against claims that the U.S. isn't testing enough to get a handle on the virus. In today's health minute, Mandy Gaither has the latest on the virus and why some health officials are sounding the alarm.