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.

Cambodia’s Ministry of Health recently confirmed the country’s twelfth human case of H5N1 avian influenza so far this year.

Although the avian flu (H5N1) virus may not be making the news as frequently, it is still working hard behind the scenes, ...

The map shows the ports of entry affected by the U.S. Agriculture Department’s announcement and the approximate locations of ...