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MLA Citation
Usha Stiefel et al.. “Healthcare personnel frequently have positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antigen tests 5 days or more after diagnosis of coronavirus disease 2019 (COVID-19).” Infection control and hospital epidemiology, vol. 43, 2022, pp. 1985–1987. http://access.bl.uk/ark:/81055/vdc_100172068525.0x00002c