Emerging Infectious Diseases (Sep 2022)

Epidemiology of Infections with SARS-CoV-2 Omicron BA.2 Variant, Hong Kong, January–March 2022

  • Yonatan M. Mefsin,
  • Dongxuan Chen,
  • Helen S. Bond,
  • Yun Lin,
  • Justin K. Cheung,
  • Jessica Y. Wong,
  • Sheikh Taslim Ali,
  • Eric H.Y. Lau,
  • Peng Wu,
  • Gabriel M. Leung,
  • Benjamin J. Cowling

DOI
https://doi.org/10.3201/eid2809.220613
Journal volume & issue
Vol. 28, no. 9
pp. 1856 – 1858

Abstract

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Our analysis of data collected from multiple epidemics in Hong Kong indicated a shorter serial interval and generation time of infections with the SARS-CoV-2 Omicron variant. The age-specific case-fatality risk for Omicron BA.2.2 case-patients without complete primary vaccination was comparable to that of persons infected with ancestral strains in earlier waves.

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