Estimating the Incubation Period of SARS-CoV-2 Omicron BA.1 Variant in Comparison with that during the Delta Variant Dominance in South Korea

Yanwen Liu, Shi Zhao, Sukhyun Ryu, Jinjun Ran, Junhua Fan, Daihai He

Research output: Journal article publicationJournal articleAcademic researchpeer-review

10 Citations (Scopus)

Abstract

Based on exposure history and symptom onset of 22 Omicron BA.1 cases in South Korea from November to December 2021, we estimated mean incubation period of 3.5 days (95% CI: 2.5, 3.8), and then compared to that of 6.5 days (95% CI: 5.3, 7.7) for 64 cases during Delta variants' dominance in June 2021. For Omicron BA.1 variants, we found that 95% of symptomatic cases developed clinical conditions within 6.0 days (95% CI: 4.3, 6.6) after exposure. Thus, a shorter quarantine period may be considered based on symptoms, or similarly laboratory testing, when Omicron BA.1 variants are circulating.

Original languageEnglish
Article number100425
Pages (from-to)1-4
Number of pages4
JournalOne Health
Volume15
DOIs
Publication statusPublished - Dec 2022

Keywords

  • Delta variant
  • Incubation period
  • Omicron BA.1 variant
  • Quarantine

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Infectious Diseases

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