Norovirus, aka the stomach flu, is surging across the United States as 2025 begins. Here's what to know about norovirus symptoms, how it spreads, and prevention.

Norovirus is the leading cause of vomiting, diarrhea and foodborne illness in the US, according to the Centers for Disease Control and Prevention.

Typical household cleaners like hand sanitizer or wipes don't kill germs from norovirus. Here's what you can use instead.

William Schaffner: The most important thing is good hand hygiene. Washing with soap and water works the best. Those hand hygiene gels and wipes – the hand sanitizers – that people tend to use aren’t as effective against norovirus, so just wash frequently with good old soap and water. And then, of course, avoid people who are sick.

If you're ill with the "stomach flu," you're not alone. Norovirus is surging across Arizona, is highly contagious and spreads rapidly.

Lehigh Valley’s health networks are seeing abnormally high cases of the stomach bug that’s taking a large number of people out of action and leaving them stuck in the bathroom.

Pomerene's Katie Wright suspects people are treating flu-like symptoms at home. "From a clinical perspective, we're not seeing an uptick in numbers."

Norovirus cases are significantly increasing in the US and Canada. Moderna is developing an mRNA-based vaccine, currently in Phase 3 clinical trials, with the potential to be the first approved Norovirus vaccine by 2026.

The CDC is warning of an overall "high level" of respiratory illness in the U.S., with COVID, the flu, RSV and norovirus all going around. Pediatrician Dr. Dylan Hes joined CBS News to talk about it.

In addition to the respiratory illnesses making their mark, a particularly nasty strain of norovirus, better known as the stomach bug, has been circulating throughout South Jersey and the surrounding areas.

Doctors in the United States are warning everyone to look for dehydration as an important symptom of norovirus infection, which has seen a significant rise across the country this winter season. According to experts,

Four viruses are going around in what some have called a quad-demic.  They are flu, COVID-19, norovirus, and RSV. Several viruses have been on the rise since November, the CDC said. Pennsylvania is considered to have a high rate of respiratory illnesses.