Incubation period of wild type of SARS-CoV-2 infections by age, gender, and epidemic periods
Frontiers in public health
; 10, 2022.
Article
in English
| EuropePMC | ID: covidwho-1989245
ABSTRACT
Background The incubation period of the coronavirus disease 2019 (COVID-19) is estimated to vary by demographic factors and the COVID-19 epidemic periods. Objective This study examined the incubation period of the wild type of SARS-CoV-2 infections by the different age groups, gender, and epidemic periods in South Korea. Methods We collected COVID-19 patient data from the Korean public health authorities and estimated the incubation period by fitting three different distributions, including log-normal, gamma, and Weibull distributions, after stratification by gender and age groups. To identify any temporal impact on the incubation period, we divided the study period into two different epidemic periods (Period-1 19 January−19 April 2020 and Period-2 20 April−16 October 2020), and assessed for any differences. Results We identified the log-normal as the best-fit model. The estimated median incubation period was 4.6 (95% CI 3.9–4.9) days, and the 95th percentile was 11.7 (95% CI 10.2–12.2) days. We found that the incubation period did not differ significantly between males and females (p = 0.42), age groups (p = 0.60), and the two different epidemic periods (p = 0.77). Conclusions The incubation period of wild type of SARS-CoV-2 infection during the COVID-19 pandemic 2020, in South Korea, does not likely differ by age group, gender and epidemic period.
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Collection:
Databases of international organizations
Database:
EuropePMC
Language:
English
Journal:
Frontiers in public health
Year:
2022
Document Type:
Article
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