Highly contagious delta variant on path to become dominant strain in the US

The U.S. is in a far better place this summer than many other countries witnessing new COVID cases. But the delta variant of the virus — now expected to become the dominant strain in the U.S. — is posing serious dangers in areas with low vaccination rates. Its spread in many countries worldwide is triggering shutdowns and fears of more deaths. William Brangham reports.

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Видео Highly contagious delta variant on path to become dominant strain in the US канала PBS NewsHour