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.
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 is seeing a rise in respiratory illnesses, prompting health experts to talk of a potential “quad-demic.” The term refers to the simultaneous spread of four major viruses: COVID-19,
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
Cases of RSV, flu, COVID, and norovirus are on the rise as winter ‘sick season’ arrives
This fall saw an unusually high number of cases of “walking” or mycoplasma pneumonia, a mild pneumonia that typically causes a severe cough but less fatigue than more serious forms of the disease.
Norovirus and the 'quad-demic': What to know
The norovirus (commonly known as stomach flu) is surging with levels not seen in more than a decade. Public health officials are warning that we might soon have a "quad-demic" on our hands.
Flu, RSV, and Norovirus Are in Full Swing, While COVID Looms
Most U.S. states are reporting high or very high flu-like activity, while COVID-19 rates remain lower than this time last year.
What Is Quad-Demic? Flu, COVID, RSV And Norovirus Strain Hospitals In UK, US
Health experts are warning of a 'quad-demic' this winter, as four viral infections spread simultaneously in the UK and US.
Twin Cities senior living facility quarantines patients to prevent spread of norovirus as hospitals strained with "quad-demic"
As illness is spreading around the state, one patient says their senior living facility is keeping residents separated to ...
What Is the ‘Quad-demic’ — and Is It Coming for You?
Care for the flu is generally supportive — meaning rest, hydration, and over-the-counter medication, but as the Mayo Clinic ...
Health.com3d
What’s Going Around Right Now? The 4 Winter Viruses of the ‘Quad-Demic,’ Explained
COVID-19, influenza, RSV, and norovirus—have created what experts are calling a "quad-demic" in the U.S. Here's what to know ...
Tracking the ‘quad-demic’
Cook your food thoroughly (especially seafood and shellfish) to at least 145 degrees Fahrenheit. Clean and sanitize surfaces ...
KTNV Las Vegas3d
The 'Quad-demic' of contagious viruses in the valley and what you can do to stay healthy
From RSV to COVID-19, and even Norovirus, Southern Nevada is dealing with a lot of contagious viruses right now.