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

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

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

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

The H5N1 bird-flu virus has been found in new dairy-cattle herds in Southern California. No human-to-human spread has been ...

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

On the same day that the first severe case of the avian virus in the U.S. was disclosed in Louisiana, halfway across the ...

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

California has declared a state of emergency for H5N1 bird flu amid fears that the virus could jump to people and start to spread. The move comes in response to a major outbreak of the virus ...

California declared a state of emergency over bird flu in dairy cattle, as Gov. Newsom signed a proclamation to enhance the ...