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Difference in mortality among individuals admitted to hospital with COVID-19 during the first and second waves in South Africa: a cohort study
The first wave of COVID-19 in South Africa peaked in July, 2020, and a larger second wave peaked in January, 2021, in which the SARS-CoV-2 501Y.V2 (Beta) lineage predominated. We aimed to compare in-hospital mortality and other patient characteristics between the first and second waves.In this prospective cohort study, we …