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Bioscience-Medicine

COVID Cases Finally Are Falling. Experts Worry Variants Could Erase That Fast

A computer rendering of SARS-CoV-2, the virus that causes COVID-19.
A computer rendering of SARS-CoV-2, the virus that causes COVID-19.

The Biden administration must do more to identify and track three fast-spreading mutations of the COVID-19 virus, researchers say. Clearer CDC guidelines for masks and reopening would help too.

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