A Louisiana patient is the first person in the United States to die as a result of H5N1 infection. One expert likens what ...

The patient, who was older than 65 and had underlying medical conditions, was hospitalized weeks ago in critical condition ...

Teen's recovery from H5N1 bird flu raises concerns after genetic mutations suggest virus could become more dangerous to ...

Human metapneumovirus (HMPV), a flu-like virus spreading in China, has been detected in the U.S. Here’s what you need to know ...