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.

Health officials in Philadelphia announced on Wednesday the city's suspected case of bird flu found after testing on an ill snow goose.

Now the Trump administration appears to be alleging that voters were somehow hoodwinked into supporting the measure by ...

Another case of bird flu has been detected in Philadelphia, but health officials say the risk to the public remains low.

PHILADELPHIA (AP) — As trash and tempers heat up across Philadelphia on Day 8 of a strike by blue-collar city workers Tuesday ...

Philadelphia health officials say a goose found next to Carroll Park in West Philadelphia had highly infectious bird flu.

The U.S. Centers for Disease Control and Prevention said on Monday it has ended its emergency response for H5N1 bird flu, ...

Your questions about bird flu, answered Will chickens get vaccines? How are carcasses disposed of? Will tariffs further affect egg prices?

The Centers for Disease Control and Prevention (CDC) has ended its emergency response to the H5N1 avian flu. A spokesperson ...

The U.S. Centers for Disease Control and Prevention ended its emergency response for bird flu as the outbreak that sickened ...

Doctors and researchers said the moves will make it harder to detect potentially dangerous changes. If the virus continues to ...