Scientists who have studied #H5N1 #birdflu for years are flummoxed by the lack of severe cases among the 55 human cases the US has confirmed this year. I talked to lots to explore the theories of what's going on. https://www.statnews.com/2024/12/02/bird-flu-h5n1-mild-cases-mystery/
Why have U.S. bird flu cases been so mild? Scientists have some theories
For more than two decades, H5N1 has had a well-earned reputation as a very dangerous virus. Fortunately, the current outbreak has proven to be an exception.Helen Branswell (STAT)