The continued spread of the Delta variant of COVID-19 could pose a serious risk to the U.S., particularly the unvaccinated population, experts say.
Currently, the variant accounts for 1 in 4 cases in the U.S., according to estimates from the Centers for Disease Control and Prevention (CDC). But that number could keep rising if vaccination rates don’t start picking up quickly enough. Among those ages 18 and up in the U.S., 57.4% are fully vaccinated, while 66.5% has received at least one…
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