How Protected Are Vaccinated Americans Against The Delta Variant?

With life starting to get back to normal in some cities across the United States, the Delta variant of COVID-19 could become the dominant strain in the country. In this week’s Sunday Focus, NBC News’ senior medical correspondent Dr. John Torres reports that the key to stopping COVID-19 and all its variants is to get vaccinated. Some 65% of Americans have received at least one shot.

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