On the week of Dec. 5, the CDC reported 91 cases of the virus ― over double the highest number recorded between 2021 and 2024.

Norovirus is raging in the United States this winter. According to the latest data from the Centers for Disease Control and Prevention, there were 91 outbreaks reported by state health departments the week of Dec. 5, the most cases seen at this time of year since 2012.

There were 91 outbreaks reported during a week in December — more than double what was seen in previous years, the CDC says.

Public health officials note the disease thrives in colder months, and reduced pandemic protocols may be fueling the spike.

The dreaded norovirus illness known for severe bouts of vomiting, diarrhea and cramps is making life miserable for an increasing number of people as the illness surges.

According to the CDC, norovirus is the leading cause of vomiting and diarrhea, and foodborne illness in the U.S. Even if you've had norovirus before, you can still be infected again due to the different mutations.