The H5N1 virus that infected a Canadian teen appears not to have spread, but it shows signs of mutation that makes flu ...

Avian influenza H5N1 infection in humans has spread to seven U.S. states, growing from 46 cases last week to 52 cases this week.

With 46 U.S. cases and alarming signs of the virus crossing species, experts warn of unpredictable risks if human-to-human ...

So far there’s been only one reported human case of bird flu in Texas this year in April and 46 total in the U.S., according ...

The U.S. Centers for Disease Control and Prevention (CDC) on Friday confirmed highly pathogenic form of bird flu in a person ...