The surge has come at a time when numbers are usually dropping off. It's the worst in 15 years, says one New Jersey doctor.

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

Doctors are especially concerned about this recent flu A spike. Here’s what they’re alarmed about the most: Medical experts ...

The worst flu season in years is swamping California, prompting a renewed surge in hospitalizations as officials warn the ...

Influenza, COVID-19 and RSV are staples of the winter cold and flu season, but the measles, whooping cough and norovirus are ...

Low vaccination rates may also be contributing to this year’s sick season. As of late January, U.S. vaccine uptake was well ...

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

Flu A and Flu B are distinct viruses, each with its own challenges. Understanding the difference helps you protect your ...

About 44% of adults got flu shots this winter, the same as last winter. But coverage of children is way down, at about 45% this winter. It’s usually around 50%, according to CDC data.

NEW YORK (AP) — The U.S. winter virus season is in full force, and by one measure is the most intense in 15 years. One indicator of flu activity is the percentage of doctor’s office visits ...