Scientists are on alert for changes in the H5N1 or bird flu virus that could signal it is adapting to spread among humans. The virus has caused serious, sometimes fatal, infections among people and ...

U.S. health and agriculture officials are ramping up testing and tracking of bird flu in dairy cows in an urgent effort to understand — and stop — the growing outbreak. So far, the risk to humans ...

Dairy cows feed at a dairy farm near Corcoran, Calif. Seven out of 10 herds that have been found to be infected with avian flu are in the state. Avian flu, highly contagious and damaging to poultry ...

In recent months, the avian influenza virus, commonly known as bird flu, has taken alarming steps toward becoming a bigger ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. U.S. health and agriculture officials are ...