Immunity against seasonal H1N1 flu reduces bird flu severity in ferrets, study suggests

Pre-existing immunity against seasonal H1N1 flu might help explain why most reported human cases of H5N1 bird flu in the U.S. have not resulted in lethal outcomes.

Pre-existing immunity against seasonal H1N1 flu might help explain why most reported human cases of H5N1 bird flu in the U.S. have not resulted in lethal outcomes.

Read more https://www.sciencedaily.com/releases/2025/02/250226175926.htm