Ready-to-eat chicken fettuccine Alfredo meals sold at Walmart and Kroger have been recalled after a listeria outbreak.

The U.S. has approved the world’s only twice-a-year shot to prevent HIV, maker Gilead Sciences announced Wednesday. It's the first step in an anticipated global rollout that could protect millions – ...

A volcanic eruption in Indonesia sent an enormous ash cloud more than six miles into the sky, disrupting or canceling dozens of flights to and from the tourist island of Bali.