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What to know about 'quad-demic' of COVID, flu, RSV and norovirus in US

ABC News
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Four viruses are currently circulating in the United States , which some have referred to as a "quad-demic" Doctors say hospitals are at or near capacity and patients often wait for hours before they are seen in emergency departments.

A rapid increase in norovirus cases occurring while respiratory virus season is peaking is "atypical," doctors say.

There is no vaccine available to protect against norovirus, so the CDC recommends washing hands thoroughly with soap and water and staying away from others when sick.

Only 43.4% of adults were vaccinated against the flu and 22.8% were vaccinated with the updated 2024-25 COVID-19 vaccine.

Doctors worry that the lack of vaccination will impact the health care system's ability to treat patients.