Rising H5N1 bird flu cases in the U.S. prompted the CDC to study the virus in ferrets, revealing it may have the potential to spread and cause severe symptoms in other mammals.

H5N1 bird flu is likely infecting more people than we know. New research from the Centers for Disease Control and Prevention shows that 7% of monitored dairy farmers in Michigan and Colorado have tested positive for antibodies to the virus. Since 2022 ...

Oregon state and federal officials are investigating positive H5N1 bird flu cases at a farm after the virus was detected in a pig in the U.S. for the first time. USDA National Veterinary Services

The CDC said Thursday it is updating its recommendations for testing, treatment and protection for workers who may be exposed animals infected with bird flu.

Federal health officials are calling for more testing and treatment of workers on farms with bird flu. The new guidance comes after a study showed that some dairy workers had signs of infection, even when they didn’t report feeling sick.

A new study found some dairy workers showed signs of infection, even when they didn’t report feeling sick. Blood tests from 115 farmworkers in Colorado and Michigan found eight had antibodies that indicated previous infection with the virus.