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Emergence of SARS-CoV-2 B.1.1.7 Lineage - United States, December 29, 2020-January 12, 2021
期刊： MMWR-MORBIDITY AND MORTALITY WEEKLY REPORT, 2021; 70 (3)
What is already known about this topic? A more highly transmissible variant of SARS-CoV-2, B.1.1.7, has been detected in 12 U.S. states. What is added......
