U.S. surges of COVID-19, influenza, respiratory syncytial virus (RSV) and norovirus have collectively been dubbed a "quad-demic." Here what you can do.

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.

Respiratory Syncytial Virus, or RSV, is a common respiratory virus that causes mild, cold-like symptoms in most people, according to the CDC. However, it can cause severe illness in some people, especially babies, older adults and the immunocompromised. The virus is the leading cause of childhood illness and hospitalization in infants.

Respiratory viruses are at high levels and rising in VA, the latest health data shows. The state has seen 2 pediatric flu deaths this week.

Hospitals across England have been under severe pressure all winter as flu cases skyrocketed earlier this month and cases of the winter vomiting bug Norovirus soared to a five-year January high. The surge in sick patients has forced emergency departments around the country to care for patients in any available space including corridors.

"This 'quad-demic' is sort of this really tweetable term for our normal winter viruses: flu covid and RSV; and then a little bit of a wild card this year, we're seeing some higher numbers than usual another virus called norovirus, which is sometimes referred to as stomach flu," Monday said.

Ohio Department of Health director Dr. Bruce Vanderhoff cautioned Ohioans to continue to take these illnesses seriously.

The most common symptoms of norovirus include vomiting, diarrhea and stomach pain, but other symptoms include fever, headache and body aches. Burns said symptoms last about 48-72 hours, but a person can still be contagious for up to two weeks.

Viral sicknesses have risen in early 2025 amid the ongoing “quad-demic” in the U.S., referring to three respiratory viruses and one gastrointestinal disease, according to the Centers for Disease

RSV and norovirus, raising concerns about a potential ‘quad-demic’. The United States is witnessing the simultaneous rise and spread of four viruses, leading to speculation about a potential “quad-demic.

A “WORRYING” surge in cases of a winter virus causing violent vomiting and diarrhea is flooding NHS hospitals. Norovirus, better known as the ‘winter vomiting bug’, is

Viruses are thriving across the United States and in Ohio, as the Buckeye State is hit with a "quad-demic" of COVID-19, influenza, norovirus and respiratory syncytial virus (RSV) that only stands ...