Influenza levels in the US are the highest they've been in 15 years amid winter weather and a second wave of the virus.

The U.S. winter virus season is in full force, and by one measure is the most intense in 15 years.

Outbreaks and high levels of illnesses (like the flu) have become more common as vaccination rates have fallen, especially ...

"Society as a whole is less immune, we have slightly lower vaccination rates, and so our defenses are slightly down." Is it too late to get a flu shot? It's not too late to get a flu shot — in ...

While we often refer to it as "the flu," the influenza virus has several strains, with flu A and flu B considered the most ...

(Reuters) -Australian biopharmaceutical company CSL said on Tuesday that falling immunisation rates in the U.S., its largest market, weighed on its vaccine sales and first-half profit growth, sending ...

The flu can also cause a general feeling of fatigue or malaise, Ray says, as well as gastrointestinal issues like diarrhea ...

The flu vaccine benefits you by protecting you and the people you live with or spend significant time around. Everyone 6 ...