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 Cheung, Jessica Y. Wong, Sheikh Taslim Ali, Eric H. Y. Lau, Peng Wu, GM Leung, Benjamin J. Cowling
Abstract
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.
Topics & Concepts
EpidemiologyCase fatality rateSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2)Coronavirus disease 2019 (COVID-19)VirologyMedicineVaccination2019-20 coronavirus outbreakDemographyOutbreakInternal medicineDiseaseInfectious disease (medical specialty)SociologySARS-CoV-2 and COVID-19 ResearchCOVID-19 epidemiological studiesCOVID-19 Clinical Research Studies