Seroprevalence of Infection-Induced SARS-CoV-2 Antibodies — United States, September 2021–February 2022 | MMWR
Print/DownloadOn April 26, 2022, this report was posted online as an MMWR Early Release.In December 2021, the B.1.1.529 (Omicron) variant of SARS-CoV-2, the virus that causes COVID-19, became predominant in the Un…
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