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Factors associated with severe acute respiratory syndrome coronavirus 2 episode duration irrespective of Ct value (left), Ct <30 (right) in index cases on Weibull accelerated failure time regression, Klerksdorp and Soweto, South Africa, 2020–2021 (n = 123). Abbreviations: BMI, body mass index; Ct, cycle threshold; HIV, human immunodeficiency virus.
