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Doctor urges masking, boosters as omicron variant causes COVID surge
10:08
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Now Playing
Chris Hayes: How the booster shot messaging got muddled
02:42
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UP NEXT
America heads into a second holiday season of the Covid era
02:51
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Virus cases surge in U.S. due to omicron variant
10:27
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NFL postpones games amid Covid-19 outbreak
02:11
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European nations impose new Covid-19 restrictions
02:43
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Dr. Ashish Jha: We have the tools to keep schools open and safe
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Sen. Warren tests positive for Covid-19
00:26
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We will beat Covid with vaccinations, ‘not fear’: NYC mayor-elect Eric Adams
05:29
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NBA, NFL postpones games due to Covid health and safety protocols
02:17
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Dr. Adalja answers viewer questions about omicron, boosters, holiday gatherings, and more
07:06
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“Superimmunity,” Explained
01:15
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Biden to address alarming rise in omicron variant cases Tuesday
02:29
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Rising COVID cases take a toll on professional sports
06:53
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New York reports record 20,000+ Covid cases
06:19
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Explosive report: Trump admin ‘criminally negligent’ in ‘undermining’ COVID response
05:57
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How the Biden administration’s ‘test-to-stay’ policy aims to keep kids in school
02:44
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Covid cases rising as Omicron spreads across U.S.
04:13
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Dr. Gounder: ‘Vaccines are still preventing severe disease’ amid Omicron surge
05:07
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Data plainly shows benefits of Covid vaccine booster in reducing case rates
06:26
Doctor urges masking, boosters as omicron variant causes COVID surge10:08Now PlayingChris Hayes: How the booster shot messaging got muddled 02:42UP NEXTAmerica heads into a second holiday season of the Covid era02:51Virus cases surge in U.S. due to omicron variant10:27NFL postpones games amid Covid-19 outbreak02:11European nations impose new Covid-19 restrictions02:43Dr. Ashish Jha: We have the tools to keep schools open and safe03:55Sen. Warren tests positive for Covid-1900:26We will beat Covid with vaccinations, ‘not fear’: NYC mayor-elect Eric Adams05:29NBA, NFL postpones games due to Covid health and safety protocols02:17Dr. Adalja answers viewer questions about omicron, boosters, holiday gatherings, and more07:06″Superimmunity,” Explained01:15Biden to address alarming rise in omicron variant cases Tuesday02:29Rising COVID cases take a toll on professional sports06:53New York reports record 20,000+ Covid cases06:19Explosive report: Trump admin ‘criminally negligent’ in ‘undermining’ COVID response05:57How the Biden administration’s ‘test-to-stay’ policy aims to keep kids in school02:44Covid cases rising as Omicron spreads across U.S.04:13Dr. Gounder: ‘Vaccines are still preventing severe disease’ amid Omicron surge05:07Data plainly shows benefits of Covid vaccine booster in reducing case rates06:26