Tweet
Emerg Infect Dis
. 2022 Aug 1;28(9).
doi: 10.3201/eid2809.220613. Online ahead of print.
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
- PMID: 35914518
- DOI: 10.3201/eid2809.220613
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.
Keywords: BA.2; COVID-19; China; Hong Kong; Omicron; SARS-CoV-2; coronavirus disease; epidemiology; fatality; respiratory infections; severe acute respiratory syndrome coronavirus 2; vaccine-preventable diseases; viruses; zoonoses.