Breaking down why health officials are so worried about Omicron wariant

CLIP11/27/21

NBC News’ Jose Diaz-Balart interviews experts to find out why the new Omicron variant is so worrying. Is it more transmissible? More deadly? And will the vaccines work on it?

NRS0 E0 3 minNews and Information Primetime Excerpt

Appearing:Lester Holt

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Tags: health, International News, Lester Holt, Making A Difference, NBC Nightly News, National News, news, nightly news, U.S. News, Breaking News, Evening News, politics, World News

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