A subtype of bird flu caused by avian influenza A (H5) virus has been spreading worldwide in wild birds with a few outbreaks in poultry, dairy cows and other mammals across the United States ...

So far, 67 human bird flu cases have been confirmed in the U.S., the CDC says. A child in San Francisco was recently confirmed to be the third human case of bird flu in the United States in which ...

After a year of rising bird flu cases among people in the United States, researchers are keeping a watchful eye on the H5N1 virus to slow further spread. Since early 2024, the country has recorded ...