Evidence brief of SARS-CoV-2 incubation periods. : HP5-179/2024E-PDF

"The incubation period is defined as the time between exposure to an infectious pathogen and symptom onset. The incubation period of SARS-CoV-2 determined by the World Health Organization (WHO) and the European Centers for Disease Control (ECDC) is 0-14.0 days, the US Centers for Disease Control and Prevention (CDC) is 2.0-14.0 days and the Public Health Agency of Canada is 1.0-14.0 days. A comparison across what was known on incubation periods for other coronaviruses reported the average incubation periods of SARS was 4.6 days (95% CI: 3.8-5.8 d) and MERS was 5.2 days (95% CI: 1.9-14.7 d). This review summarizes the incubation period of the original SARS-CoV-2 variants prior to the emergence of variants of concern (VOC) from several systematic reviews that included studies from the first 12 months of the pandemic and more recent research that has focused on establishing the incubation period of the VOCs. …"--Introduction, page 4.

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