JN.1, a descendant of BA.2.86 -- which is itself an offshoot of the omicron variant -- now makes up an estimated 61.6% of cases in the country, according to data from the Centers for Disease Control and Prevention.
The Northeast is the region of the U.S. with the highest prevalence, making up an estimated 74.9% of COVID-19 cases, according to the CDC.
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