PMC:7014672 / 9850-10829
Annnotations
{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7014672","sourcedb":"PMC","sourceid":"7014672","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7014672","text":"We characterised the distribution of incubation periods for travellers from Wuhan infected with 2019-nCoV in Wuhan who were reported as cases between 20 and 28 January 2020. The study provides empirical evidence to back reports on a familial cluster where five family members developed symptoms 3 to 6 days after exposure [10], and fits within the range for the incubation period of 0 to 14 days assumed by the WHO and of 2 to 12 days assumed by the ECDC [11]. Our estimate of the mean incubation period is longer than the value of 5.2 days based on 10 cases [12], and 4.8 days (range: 2–11) based on 16 travellers between Wuhan and Guangdong [13]. The latter study is restricted to travellers with a 3-day exposure window. Repeating our analysis with only the 25 visitors to Wuhan who had a closed exposure window, leads to a mean incubation period of 4.5 days (CI: 3.7–5.6) which is more in line with the studies above, but the 95th percentile drops to 8.0 days (CI: 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