The U.S. is seeing a "quad-demic" as cases of COVID-19, flu, RSV and norovirus spread at the same time. Experts said this is what you need to know.

Norovirus, also known as the stomach bug, is spreading across the U.S. Here's what to know about the contagious virus and how best to prevent an infection.

As illness is spreading around the state, one patient says their senior living facility is keeping residents separated to prevent more people from getting sick.

A norovirus outbreak on a Holland America Line ship sickened 60 people. Among 1,369 guests on its Volendam ship, 53 reported being ill during its current voyage along with seven crew members, according to the Centers for Disease Control and Prevention.

You can also get norovirus by touching objects or surfaces that are contaminated and then putting your hands in your mouth without washing them first. Hand-washing with soap and water is key, as hand sanitizer will not do the trick in the case of norovirus, experts say.

The Health Department confirmed three people at the shelter tested positive for the virus among a cluster of 28 people suffering from acute gastrointestinal illness.

The brief but miserable symptoms have no treatment except hydration and rest. Doctors have several tips on how to stop the spread.

As many people know all too well, norovirus is a wicked illness. It causes gastroenteritis, a fancy name for violent

Health care providers are not required by law to report norovirus cases to the state health department, so the data reflect estimates from schools, long-term care facilities and day cares.

CHICOPEE, Mass. (WWLP) – A new strain of Norovirus is impacting children and adults, and it’s spreading in our state. Respiratory illnesses continue to surge, that’s because it’s colder and more people are indoors allowing germs to spread, but it can be prevented.

No. Hand sanitizer is simply not as effective against norovirus as it at killing other pathogens due to the virus's firm shell, Dr. William Schaffner, professor of infectious diseases at Vanderbilt University Medical Center, told TODAY.com recently.

According to the Minnesota Department of Health, there have been 76 reported outbreaks in December which is higher than in previous years.