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Global concerns grow over Omicron variant

Researchers are trying to learn more about the Omicron COVID-19 variant and whether or not it is resistant to existing vaccines or more deadly than other variants. CBS news foreign correspondent Debora Patta takes us inside one of the labs in South Africa where the new strain was first discovered. Then, Dr. Stanley Perlman, a professor of microbiology, immunology and pediatrics at the University of Iowa, joins CBSN to discuss the latest.
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