It's not uncommon for February to have a spike in flu cases, but this year, there are significantly more cases than average.

Health Minister Datuk Seri Dzulkefly Ahmad said there was no cause for worry over the shortage of certain flu vaccines, ...

NEW YORK (AP) -- The U.S. winter virus season is in full force, and by one measure is the most intense in 15 years.

The United States is experiencing its most severe flu season in more than a decade, with the U.S. Centers for Disease Control ...

Levels of influenza nationwide are now at the highest they have been since the peak of the 2009 swine flu pandemic, according ...

Hilleman knew that it was just a matter of time before the influenza virus shifted and caused a pandemic similar to the one in 1918. Exactly when that shift would occur was anyone’s guess.

While a pandemic is not inevitable, the spread of the bird flu virus, also known as H5N1, has surpassed worrisome milestones ...

Over the past week, a series of developments have reaffirmed the imminent danger of an H5N1 “bird flu” pandemic, for which ...

Sonya Stokes, an emergency room physician in the San Francisco Bay Area, braces herself for a daily deluge of patients sick ...