RSV, norovirus and flu

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,
Are your symptoms the flu, COVID, RSV, Norovirus? How to tell the difference
Flu season is here in New Jersey, but other illnesses are in full swing in the Garden State. Here are the symptoms and how long you're contagious.
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.
Where are COVID, flu and RSV cases rising in the US? See maps
Influenza A, COVID-19 and norovirus (stomach flu) are on the rise, according to the Centers for Disease Control and Prevention. But there's a fourth "bug" the public should be aware of: respiratory syncytial virus. RSV causes cold-like symptoms and affects the breathing passages and lungs.
Delaware seeing 'very high' levels of COVID, flu and RSV, CDC says. How to keep safe
The CDC said respiratory Illnesses like COVID, flu and RSV are increasing in the U.S. with levels very high in Delaware. Here's where they're highest.
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.
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.
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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Flu, COVID, and RSV: Flu Is Driving a Surge of Illness in Most States
Flu and COVID-19 case counts are high and rising in most parts of the United States, according to recent data by the ...
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The leading causes of death in America right now, according to the CDC—and how COVID-19 compares
Death Records examined data from the Centers for Disease Control and Prevention to understand and explain the evolution in ...
Where are flu rates surging? See maps
At least 15 states have very high levels of influenza, according to the Centers for Disease Control and Prevention.
These 3 Illnesses Are Spiking In MD, CDC Says
"When levels are high, it may indicate that infections are making people sick enough to require treatment," the CDC explained ...
Flu activity is high in most of the US. Some hospitals are struggling to manage the surge
Flu activity has surged to high levels in many states, overwhelming some hospitals. Experts discuss what to expect for the ...