The flu vaccine may not be very effective this winter, according to U.S. health officials who worry this may lead to more serious illnesses and deaths. As flu season begins to ramp up, officials say ...

Flu cases are “very high” across much of Idaho, federal health experts say, and another respiratory virus is on the rise as ...

More than 100 children have died so far this season ...

ATLANTA – About 1 in 5 U.S. children had a flu-like illness earlier this month — and most of those cases likely were swine flu, according to a new government health survey. About 7 percent of surveyed ...

As the U.S. flu season winds down, health officials say the flu vaccine didn’t work very well, with one of its worst ...

This browser does not support the Video element. The CDC estimates at least 11 million illnesses from the flu so far this year, with 120,000 hospitalizations and 5,000 deaths. The dominant flu strain ...

If it feels like everyone around you has come down with the flu, you're not imagining it. As of Jan. 9, the U.S. Centers for Disease Control and Prevention (CDC) estimates that at least 15 million ...

Add Yahoo as a preferred source to see more of our stories on Google. VIRGINIA (WAVY) — The Centers for Disease Control and Prevention (CDC) said Virginia and North Carolina are now experiencing ...

Respiratory virus season is in full swing across California, with several illnesses spreading across the state. Cases of influenza and respiratory syncytial virus are on the rise, the California ...

Have you noticed a surge recently in the number of people calling out sick?

The CDC estimates at least 11 million illnesses from the flu so far this year, with 120,000 hospitalizations and 5,000 deaths. The dominant flu strain this year is A H3N2, which causes the most ...