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.

Public health officials are recommending wider testing and more aggressive use of flu antiviral medicine for workers who might be exposed to bird flu at poultry and dairy farms. The Centers for Disease Control and Prevention unveiled updated ...

After a new study showed that bird flu has spread to dairy farm workers more often than previously known, the US Centers for Disease Control and Prevention is expanding its recommendations for testing and treatment of workers on farms where animals have tested positive.