The CDC is now calling for subtyping of influenza A viruses in all hospitalized patients -- and on an accelerated timeline, ...
CDC officials say medical professionals are seeing more patients whose illness cannot be traced back to an infected animal or ...
The CDC has confirmed a new human H5N1 bird flu case in California, raising the US total to 67. Most cases involve farm ...
The first human death caused by H5N1 in the U.S. was reported in Louisiana on Jan. 6. Here's what to know about bird flu.