It was only a matter of time before cases of the COVID-19 omicron variant started popping up in the U.S., and now, it's here. Although it's too early to tell how this virus strain will spread, the threat it poses has already lit a fire under public health messaging.
President Biden announced a new strategy to avoid a winter surge of cases that involves free at-home testing, a vaccine booster messaging campaign and heightened international travel safeguards.
Meanwhile, the race is on to detect how omicron is already spreading in this country. NPR reporter Will Stone gives us a look into what's happening in labs right now across the country.
And Saad Omer, director of the Yale Institute for Global Health, discusses what we know about how effective travel bans are scenarios like this.
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