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Euro Surveill. 2020 Feb;25(5). doi: 10.2807/1560-7917.ES.2020.25.5.2000062.

Incubation period of 2019 novel coronavirus (2019-nCoV) infections among travellers from Wuhan, China, 20-28 January 2020.

Author information

1
Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, Netherlands.
2
Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, Netherlands.

Abstract

A novel coronavirus (2019-nCoV) is causing an outbreak of viral pneumonia that started in Wuhan, China. Using the travel history and symptom onset of 88 confirmed cases that were detected outside Wuhan in the early outbreak phase, we estimate the mean incubation period to be 6.4 days (95% credible interval: 5.6-7.7), ranging from 2.1 to 11.1 days (2.5th to 97.5th percentile). These values should help inform 2019-nCoV case definitions and appropriate quarantine durations.

KEYWORDS:

2019-nCoV; Wuhan; exposure; incubation period; novel coronavirus; symptom onset

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