New bird flu case in Louisiana raises global health concerns over virus mutations

A severe case of bird flu in Louisiana has raised global health concerns due to mutations in the virus that may enhance its ability to infect humans. This is the first reported severe illness from H5N1 in the U.S., with no evidence of person-to-person transmission. The patient was exposed to a backyard poultry flock, differing from previous cases mostly involving farmworkers. Since April 2024, the U.S. has reported 66 H5N1 cases, primarily mild, but the Louisiana case is notable for its severity. Health officials emphasize the need for precautions among those in close contact with birds. While the immediate risk to the public is low, experts warn that each human case allows the virus to adapt further, increasing potential risks.