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PBS NewsHour

Why new coronavirus variants emerge, and what that means for you
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Why new coronavirus variants emerge, and what that means for you

Image: Ritzau Scanpix/Henning Bagger via Reuters via PBS NewsHour

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Topics

variants, efficacy, infection rates

Languages

English

Description

The devastating spike in new daily COVID-19 cases in the United States has slowly begun to come down, and vaccinations are starting to protect millions of the country’s most vulnerable people.

But any respite from the pandemic’s worst chapter so far could be turned back — or made worse — by new coronavirus variants that experts say may present a variety of challenges to getting the virus under control.

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