COVID-19, influenza, RSV and norovirus

What to know about 'quad-demic' of COVID, flu, RSV and norovirus in US
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.
As the flu rises in California, the difference between COVID, RSV, Norovirus, influenza
Flu season is here in California, but other illnesses are in full swing in the Golden State. Here are the symptoms and how long you're contagious.
Influenza, RSV & COVID-19 are all on the rise in the Sheboygan area, health officials say
SHEBOYGAN – Levels of respiratory illnesses in the Sheboygan area are high, on trend with regional and state data, according to Sheboygan County Division of Public Health. Emergency visits for viral illnesses have been "very high" across the northeast part of the state, including Sheboygan, according to the Wisconsin Department of Health Services.
Viral sicknesses rise amid ‘quad-demic’ in US
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 Control and Prevention (CDC) data.
Experts warn of a ‘quad-demic’ as flu, RSV, COVID-19 and norovirus converge in California
After the holiday season and an uptick in travel, California faces a rise in respiratory illnesses, prompting health experts to talk of a “quad-demic.” The term refers to the simultaneous spread of four major viruses: COVID-19,
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RSV cases
According to the CDC, cases of the cold, flu, COVID and RSV are rising and experts predict these numbers will continue to grow in the coming weeks. Some hospitals in the U.S. are seeing an ...
RSV 'horrible because you can't do anything for them'
Country singer Lisa McHugh's six-month old daughter Hallie spent a "horrendous" 10 days in the South West Acute Hospital ...
Alabama among the worst in the nation for flu, COVID and RSV, health officials say
Despite a recent 19% decrease in emergency department visits, health officials anticipate that Alabama's flu activity will ...
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Study: Three-quarters of infants protected against RSV last season
Nearly 80% of infants born in a California health system were exposed to nirsevimab or the maternal respiratory syncytial ...
Singer 'helpless' after baby girl contracted RSV virus
County Fermanagh-based country music singer Lisa McHugh has told how her baby daughter spent 10 "horrendous" days in hospital ...
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Flu, COVID, RSV spike strains Rochester hospitals, some at 150% capacity
The rise in flu, COVID-19, and RSV cases is putting a strain on local hospitals, which are operating well beyond their ...
SC flu season: Norovirus, RSV, flu surge in South Carolina; hospitals restrict visitation
Bon Secours and Prisma Health are implementing new visitor restrictions as cases of influenza and respiratory illnesses rise ...
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RSV Vaccine Now Free For Pregnant Women: Know All About It Before Getting Vaccinated
RSV is a contagious virus causing severe respiratory infections in infants. Vaccination during pregnancy, provides newborns ...