Influenza levels in the US are the highest they've been in 15 years amid winter weather and a second wave of the virus.

Most of Trump’s health picks are uninterested in using most of the tools that can limit the spread of infectious disease.

Information has mysteriously disappeared from the U.S. government's health websites. Here's what we know, and where to find ...

A dairy worker in Nevada was infected with a new type of bird flu that’s different from the version that has been spreading in U.S. herds since last year, federal health officials ...

Yahoo News provides the latest updates on the spread of bird flu in the U.S. and its effect on rising egg prices and ...