Author: Shujuan Ma; Jiayue Zhang; Minyan Zeng; Qingping Yun; Wei Guo; Yixiang Zheng; Shi Zhao; Maggie H Wang; Zuyao Yang
Title: Epidemiological parameters of coronavirus disease 2019: a pooled analysis of publicly reported individual data of 1155 cases from seven countries Document date: 2020_3_24
ID: 56zhxd6e_65
Snippet: In conclusion, this study obtained robust estimates of several key epidemiological parameters of COVID-19. It provides additional evidence on the mean incubation period of COVID-19, which supports current practice of 14-day quarantine of persons with potential exposure but also suggests that longer monitoring periods might be needed for selected groups. The estimates of serial interval, time point of exposure and latent period provide consistent .....
Document: In conclusion, this study obtained robust estimates of several key epidemiological parameters of COVID-19. It provides additional evidence on the mean incubation period of COVID-19, which supports current practice of 14-day quarantine of persons with potential exposure but also suggests that longer monitoring periods might be needed for selected groups. The estimates of serial interval, time point of exposure and latent period provide consistent evidence on pre-symptomatic transmission. Asymptomatic transmission was also observed. This together with asymptomatic transmission and the generally longer incubation and serial interval of less severe cases suggest a high risk of long-term epidemic in the absence of appropriate control measures.
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