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Flowchart for study of SARS-CoV-2 infection in Malawi, 2020, showing participants included and lost to follow-up among household residents and health facility staff initially sampled. A) Among the 2,255 community households accepted into the study, 17.8% had 1 eligible participant, 25.8% had 2, and 56.4% had 3. B) The 1,051 HFS initially sampled were recruited from 40 health facilities. HFS, health facility staff; NPS, nasopharyngeal specimen.
