Scientists warn that a widely spreading bird flu strain with no human immunity could trigger a pandemic even deadlier than COVID-19 if it mutates to spread between humans. The H5 avian influenza virus ...
H5N5 is found in wild birds around the world, and it is relatively common for it to pass from them into flocks of poultry.
H5N1 bird flu has been circulating in U.S. wildlife since late 2021 but has caused only one human fatality. Now a different ...