#COVID-19 Transmission Dynamics Among Close #Contacts of Index Patients With COVID-19A Population-Based Cohort Study in Zhejiang Province, China

Much remains unknown about the transmission dynamics of COVID-19. How the severity of the index case and timing of exposure is associated with disease in close contacts of index patients with COVID-19 and clinical presentation in those developing disease is not well elucidated. Objectives To investigate the association between the timing of exposure and development …

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