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 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,
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.
Respiratory illnesses are up nationwide. Here are the COVID, flu and RSV hotspots
When broken down by state, most of the country is experiencing elevated respiratory illness, including a few states with “very high” ratings that act as national hotspots, CDC data shows.
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.
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.
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.

CDC Urges Faster Testing for Bird Flu

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 ...
Georgia among the states with the most flu cases, CDC says
The Centers for Disease Control and Prevention says the state of Georgia currently has a “very high” rate of flu activity.
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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 ...