H5N1 bird flu, prevalent in U.S. wild birds, has caused increasing outbreaks in poultry and dairy cows, leading to 70 human cases and one death since 2024. Experts are divided on the pandemic ...

H5N1 has led to a bird flu outbreak in humans the U.S. Will it cause a pandemic? Experts warn about virus mutations as first U.S. patient dies in Louisiana.

As of December 30, there were 66 confirmed cases of H5N1 avian influenza infection in humans in 2024, with about half in patients in California, according to CDC data.The U.S. reported its first ...

The H5N1 avian influenza virus has infected birds and mammals around the world. As of June 2025, 70 people have been infected, and one person has died in the United States. A new analysis suggests ...