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Distribution of SARS-CoV-2 Variants in a Large Integrated Health Care System — California, March–July 2021

Summary What is already known about this topic? The highly transmissible SARS-CoV-2 (B.1.617.2) Delta variant is the predominant variant circulating in the United States. What is added by this report? During March 4–July 21, 2021, sequencing data from 6,798 SARS-CoV-2–positive specimens were linked to electronic health records among Kaiser Permanente […]

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