San Mateo County public health officials reported finding H5N1 bird flu in a pet cat and a backyard poultry flock.

From direct donations to auctions and a charity benefit concert—here's how celebrities and billionaire are helping victims of the Los Angeles wildfires.

The Centers for Disease Control and Prevention resumed publishing its weekly scientific report Thursday after an ...

Two fast-moving brush fires erupted Tuesday in Los Angeles as dangerous wind conditions and unseasonably dry, warm weather sweep Southern California. The outbreak stemmed from an event at the ...

The H5N9 strain of avian influenza is much more rare than the H5N1 which has been responsible for most of the reported human ...

The progression of the species-jumping disease has been unprecedented, including the first-ever U.S. cases of infections in ...