Mutations discovered in first severe human bird flu case in the US: What we know so far

A severe case of bird flu in Louisiana has led to the discovery of mutations in the H5N1 virus, which may help it bind more easily to human cells. However, experts stress that the mutations are not cause for alarm as they appeared only after the virus adapted to the human host. While the overall risk to the public remains low, scientists continue to monitor the situation closely, particularly as flu season progresses.