H5 bird flu, a type of avian influenza, has been causing concern for months after infecting dozens of people in the U.S. this ...
A teenager in Canada, hospitalized with the country's first case of the H5N1 bird flu, is in critical condition. Health ...
Medically reviewed by John Carew, MD Fact checked by Nick Blackmer Allergies and sinus infections have overlapping symptoms, but are caused by different things. Allergies happen when your immune ...