New versions of the H5N1 virus are increasingly adept at spreading. Suggestions to either let it rip in poultry or vaccinate the birds could backfire.

The CDC ends its emergency response to H5N1 bird flu after recording 70 human cases and one death nationally, even as experts ...

The multi-agency effort, announced by Agriculture Secretary Brooke Rollins, will strengthen US agricultural research and ...

An interactive tool from Johns Hopkins University lets you track the disease as the U.S. suffers its worst year in decades. The United States is experiencing its worst measles outbreak in three ...

Emergency room visits for tick bites are at a six-year high. Here’s how to prevent tick bites, and what to do if you get bitten.