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,
Sick Season Is in Full Swing. From Flu and RSV to Norovirus, Here’s What’s Going Around
Respiratory illnesses like influenza, COVID-19, and RSV are surging across the United States, according to CDC data. Norovirus has also been pegged to a large number of cases in recent weeks. Here's how to protect yourself.
Respiratory illnesses are up nationwide: Here are the COVID, flu and RSV hotspots
If it feels like everyone around you is fighting off a cold or recovering from the flu, it may be because respiratory illnesses are running rampant in most of the United States, and cases are only increasing.
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.
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The Hospitalization Rate Among Adults With RSV Infection Is High
The all-cause hospitalization rate at 28 days is high among adults with outpatient medically attended RSV infections.
Singer 'helpless' after baby girl contracted RSV virus
About two thirds of the infants have been hospitalised. An RSV vaccine has been available to pregnant women in Northern ...
Flu, RSV on the rise in the Lehigh Valley. What you need to know
In the Lehigh Valley, cases of the flu and RSV are particularly prevalent compared with many other parts of the state.
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RSV Linked to High Burden of Hospitalizations Prior to Vaccine Availability
Among adults aged 75 and older, RSV was linked to a substantial burden of hospitalizations, ICU admissions, and in-hospital deaths before vaccines were available.
RSV emergency department visits remain high in Florida. What to know
The CDC’s overall snapshot of respiratory illness activity in Florida remains very high. The CDC has measured moderate levels ...
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 Vaccines and Treatments Face Global Access Hurdles
Vaccines and monoclonal antibodies are reducing RSV hospitalizations, but high costs and limited access in low-income ...
Georgia has high levels of RSV in wastewater, CDC says: What to do if you contract RSV
Georgia was one of 18 states with "high" or "very high" levels in wastewater, according to CDC monitoring. Here's what to ...
How long is RSV contagious? Here are the symptoms Iowans should watch for.
Cases of RSV across the country are considered "very high," as rates of other acute respiratory illnesses are also high, the ...