Bird Flu > Bird Flu News > Bird flu remains dangerous as it continues to mutate (McClatchy Newspapers via Yahoo! News)

Bird flu remains dangerous as it continues to mutate (McClatchy Newspapers via Yahoo! News)
WASHINGTON— Like the rumble of distant thunder, bird flu continues to spread across Asia, Africa and Europe. Although it's been out of the news lately in the United States, scientists say that avian influenza, as it's also known, remains a serious threat to human and animal health.