Viral mismatch between circulating strains and vaccine may have weighed down effectiveness ...

This year’s flu season is marked by the new “super flu” variant, and it’s certainly living up to its name. The US is experiencing its highest infection rate in nearly three decades, according to flu ...

SALT LAKE CITY — Flu season is in full swing, with the U.S. seeing its highest rates in 25 years. Utah hospitals have treated hundreds of patients in recent weeks as a new strain of influenza A ...

The numbers, provided by the Virginia Department of Health, are subject to change if more reports are confirmed.

Add Yahoo as a preferred source to see more of our stories on Google. The seasonal flu shot is a yearly vaccine administered to protect against the flu, or influenza. Here are the facts and side ...

As winter continues to envelop South Africa and flu cases rise, taking precautions is paramount.

Experts say they are feeling "nervous" as Australia approached this year's flu season, with a new, fast-moving strain of influenza dubbed "Super-K" circulating as vaccine uptake dwindles.

The seasonal flu shot is a yearly vaccine administered to protect against the flu, or influenza. Here are the facts and side ...