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 ...

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

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

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

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 ...