Bird flu cases linked to mammal infections are on the rise in Washington wildlife, according to the Washington Department of Fish and Wildlife (WDFW). The agency has confirmed HPAI (highly pathogenic avian influenza) infections in two cougars, a raccoon, and several other mammals since 2023.
The spread of bird flu to mammals is concerning, but not entirely unexpected. WDFW says cases are linked to animals scavenging on infected wild birds. Mammals that have tested positive for HPAI include striped skunks, bobcats, harbor seals, and raccoons in various parts of the state.
While the risk of H5N1 (bird flu) to humans is low, the CDC warns that other mammals may become infected as the virus evolves. The U.S. Department of Agriculture provides a web map showing confirmed wild mammal HPAI cases across North America.
Source: https://komonews.com/news/local/two-cougars-raccoon-recently-diagnosed-with-bird-flu-h1n1-in-washington-state-mammals-avian-influenza-wildlife