· There is marked heterogeneity across studies in reported estimates of the proportion of asymptomatic SARS CoV-2 infections that range from 1% to 80%.
· The proportion of SARS CoV-2 infections that are asymptomatic is related to the method of estimation, the population studied, setting and the timing of the estimation during the epidemic.
Williams-Roberts, H; Basran, J; Dalidowicz, M; Young, C; Mueller, M. What proportion of disease transmission is due to persons who are asymptomatic over the entire course of illness? 2020 Jun 2; Document no.: EPM051301 RR. In: COVID-19 Rapid Evidence Reviews [Internet]. SK: SK COVID Evidence Support Team, c2020. 33 p. (CEST rapid review report)