New versions of the H5N1 virus are increasingly adept at spreading. Suggestions to either let it rip in poultry or vaccinate the birds could backfire.

The U.S. Centers for Disease Control and Prevention (CDC) announced the end of the bird flu emergency, at least for now.

The CDC advised clinicians to consider H5N1 avian flu in patients who have acute respiratory illness symptoms or conjunctivitis with relevant exposure, including to raw milk.

A review and meta-analysis of data from 51 countries shows median tetracycline resistance in the bacterium that causes ...

In a major win for the nation's biosecurity efforts, Australia has been officially declared free from high pathogenicity ...