Dairies say the USDA relief money helped them sustain operations as bird flu decimated milk production, but critics say the ...

For months, bird flu was seemingly everywhere in the U.S.: news headlines reported the highly pathogenic H5N1 avian influenza virus was rapidly sweeping through hundreds of herds of dairy cattle and ...

Until recently, all dairy herd detections in the U.S. had been infected with a form of bird flu, or avian influenza, known as B3.13.

A new CDC report found evidence of previous bird flu infection in veterinary practitioners who work with cattle and who did ...

This new viral variant, H5N1, is now being detected in dairy cows, spreading the bird flu to cattle. For about a year, this new H5N1 variant called B3.13 has significantly impacted dairy cattle in ...

Bacteriologist and parasitologist Michelle Jakaitis uses a microscope to view a training sample of veligers, which are the ...

Decreased milk production, death, and early removal from a single herd of adult dairy cows infected with the H5N1 strain of ...

Cattle impacted by the bird flu exhibit flu-like symptoms, such as fever and thick and discolored milk accompanied by a sharp reduction in milk production averaging 10-30 pounds per cow throughout ...

As the H5N1 bird flu virus mutates and rapidly spreads through American cattle herds — a first for the U.S. — doctors and veterinarians are fearful that if the virus is left unchecked, it ...

H5N1 avian influenza virus was first found infecting cattle in 2024, though its risk of adapting to infect and spread through ...

Infecting dairy cattle hasn’t yet given H5N1 bird flu an evolutionary boost toward easy person-to-person spread. Michael M. Santiago/Getty Images By Tina Hesman Saey April 28, 2025 at 9:00 am ...

Over the last year, a highly pathogenic avian influenza, A (H5N1), has sporadically been reported in wild birds, poultry and dairy cows across the United States, Canada and some other countries.