Alliance for Pandemic Preparedness

March 11, 2020

Estimation of incubation period distribution of COVID-19 using disease onset forward time: a novel cross-sectional and forward follow-up study

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  • Qin et al conducted a longitudinal follow-up study of 1,211 asymptomatic individuals, who had travelled previously from Wuhan, until their symptoms developed. 
  • Findings suggest that about 10% of patients with COVID-19 may not develop symptoms until 14 days after infection. Further study of individuals with long incubation periods is warranted.

Qin et al. (Mar 10, 2020). Estimation of incubation period distribution of COVID-19 using disease onset forward time: a novel cross-sectional and forward follow-up study.  Pre-print downloaded Mar 11 from   https://doi.org/10.1101/2020.03.06.20032417