Holstein cows at Riverview Dairy in Pixley, Calif., in 2020. A new study shows the H5N1 virus is likely more widespread in cows than had been reported. (Mel Melcon / Los Angeles Times) Scientists are ...

Dozens of people in the United States have caught bird flu from animals this year, but there's no evidence that the viral disease has spread from one person to another. However, a single mutation in ...

Scientists are sounding alarms about a genetic mutation that was recently identified in four dairy cow herds, nearly one year after H5N1 bird flu was first reported in Texas dairy cattle. Although not ...