A subtype of bird flu caused by avian influenza A (H5) virus has been spreading worldwide in wild birds with a few outbreaks in poultry, dairy cows and other mammals across the United States ...

It comes as an Avian Influenza Prevention Zone was introduced in Northern Ireland on Saturday following three confirmed cases of bird flu in wild birds in three different countries. Since early ...

So far, 67 human bird flu cases have been confirmed in the U.S., the CDC says. A child in San Francisco was recently confirmed to be the third human case of bird flu in the United States in which ...