Cases of H5N1 have been climbing nationally, with one West Coast state seeing a rapid increase since the start of October.

Human cases of bird flu are now in six states (REUTERS/Tom Polansek/File Photo) The total number of human cases across the US has risen to 31, although the Centers for Disease Control and ...

Bird flu cases are steadily increasing in states around the country, as concerns grow about it spreading further. This week, Washington reported its first cases of avian influenza. Four ...

Two new cases each were confirmed in Washington and California. The number of confirmed bird flu cases has risen in the U.S. to 31, federal health officials said on Thursday. Washington health ...