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

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

As seasonal influenza ramps up, and with bird flu continuing to circulate, some experts are worried there may be a strain on ...

CDC confirms the first U.S. case of bird flu in a child, raising concerns about H5N1's potential spread and the importance of ...

The symptoms of bird flu in humans are similar to symptoms caused by other flu viruses, Dr. Schaffner says. They include ...

A child in California has tested positive for bird flu, the first case of a child in the United States becoming infected with ...

Canada has also just reported its first known case of bird flu in humans, a teenager who is currently in a critical condition ...

Highly pathogenic avian influenza (HPAI) has been found in three more commercial poultry flocks in California.

The CDC has confirmed the first bird flu case in a child, one of dozens of human cases in the U.S. this year. Experts discuss ...