The H5N1 bird flu has been spreading widely among wild birds, poultry and other animals around the world for several years, and starting early last year became a problem in people and cows in the U.S.

1. Migratory bird patterns have changed: Wild birds are primary spreaders of avian flu.The United States could be experiencing a natural and temporary decline in human cases, which tend to peak in ...

So far, only one human case has been confirmed in the U.S. in 2024. Public health officials are continuing to monitor as an outbreak of avian flu, also known as bird flu, continues to spread ...