California officials have declared a state of emergency over the spread of bird flu, which is tearing through dairy cows in that state and causing sporadic illnesses in people in the U.S. That ...

A new bird flu (highly pathogenic avian influenza) outbreak has been discovered in California. The newly reported H5N9 strain was found Monday at a duck farm in Merced County, California ...

There are 61 confirmed human cases of bird flu in people in the U.S., according to the Centers for Disease Control and Prevention. More than half of the human cases are in California. Bird flu is ...

Roosters raised for cockfighting are kept in conditions that can promote the spread of diseases like avian flu.

SACRAMENTO, California — The bird flu outbreak that has been ripping through California farms since August is starting to abate, state health and agriculture officials said Wednesday ...

THURSDAY, May 29, 2025 (HealthDay News) — The U.S. government has canceled a $600 million contract with Moderna to develop a ...

With bird flu cases on the rise across California, you may be wondering: Is your cat or dog at risk? Avian flu has been detected in dozens of domestic cats in the United States since December 2023 ...

The Trump administration has canceled $766 million awarded to drugmaker Moderna Inc. to develop a vaccine against potential ...

On Wednesday, as news broke that the Trump administration was reneging on the contract, Moderna reported positive results from an early trial of a vaccine targeting H5 influenza viruses. In a ...

As more humans become infected by H5N1 bird flu, experts worry of a new pandemic with 70 human cases in the U.S. including 1 death. What to look for.