COVID-19 surge likely

(CNN) — A flurry of new Covid-19 variants appears to be gaining traction globally, raising fears of a winter surge. 

New numbers show coronavirus cases in the United States are dropping, but several emerging variants accounted for almost 1 in 3 new infections nationwide last week, according to estimates from the Centers for Disease Control and Prevention.

Some experts think this convergence means we’ve entered a new phase in the evolution of the virus, one that will see the circulation of several variants at the same time. 

Updated booster vaccines and antiviral drugs like Paxlovid are expected to continue to be protective against severe outcomes from Covid-19 infections caused by the new variants, experts say. 

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