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COVID-19 JN.1 variant is spreading across the U.S.

A sharp uptick in emergency room visits and hospitalizations for COVID-19, influenza and RSV began in mid-December, and a COVID variant called JN.1 is rapidly spreading.. Dr. William Schaffner, a professor of infectious diseases at Vanderbilt University Medical Center, joins CBS News with the data and what to know about the variant.
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