CDC Reveals New ‘Fastest-Growing’ COVID-19 Variant in US

The CDC said it’s unclear to what extent JN.1 is contributing to hospitalizations

The Centers for Disease Control and Prevention (CDC) headquarters in Atlanta on April 23, 2020. Tami Chappell/AFP via Getty Images

The U.S. Centers for Disease Control and Prevention (CDC) indicated that the JN.1 COVID-19 subvariant is increasingly across the United States, comprising potentially a third of all cases.

The variant comprised about 0.1 percent of all COVID-19 cases in the United States as of late October, according to the federal health agency in a Dec. 8 update. But as of Dec. 8, it now makes up about 15 to 29 percent of cases, it said.