Reports that cows have been infected despite farmers' preventive measures indicate there are multiple routes of transmission ...

Los Angeles County health officials have identified three more cats with presumptive H5N1; the source of the virus has not ...

The bird flu outbreak has spread to all 50 states, these maps show. Here are the symptoms and what to do if you think you ...

California officials have declared a state of emergency over the spread of bird flu, which is tearing through dairy cows in ...

A patient in Louisiana was hospitalized after a recent exposure with the CDC issuing guidance to those most at-risk of infection.

The U.S. Centers for Disease Control and Prevention says a patient has been hospitalized with a severe case of H5N1 infection ...

Northwest Naturals is recalling a line of its pet food after authorities Oregon linked the death of a cat to a batch ...

The first severe case of H5N1 bird flu was confirmed in Louisiana. Here is a map of other states that have been affected.

A Louisiana patient is critically ill with severe respiratory symptoms from H5N1 bird flu, marking the 61st U.S. human case ...

Medscape Medical News spoke with the CDC expert on the current H5N1 situation in the United States and ongoing surveillance ...