tetano
Editor, Senior Moderator
Emerg Infect Dis
. 2024 Jul;30(7):1430-1433.
doi: 10.3201/eid3007.230968.
Vaccine Effectiveness against SARS-CoV-2 among Household Contacts during Omicron BA.2-Dominant Period, Japan
Tsuyoshi Ogata, Hideo Tanaka, Akemi Kon, Noriko Sakaibori, Emiko Tanaka
We calculated attack rates for household contacts of COVID-19 patients during the SARS-CoV-2 Omicron BA.2-dominant period in Japan. Attack rates among household contacts without recent (<3 months) vaccination was lower for contacts of index patients with complete vaccination than for contacts of index patients without complete vaccination, demonstrating indirect vaccine effectiveness.
Keywords: BA.2; COVID-19; COVID-19 vaccines; Contact tracing; Japan; Omicron; SARS-CoV-2; SARS-CoV-2 variants; attack rate; coronavirus; coronavirus disease; household contact; incidence; infectiousness; respiratory diseases; risk factors; vaccine effectiveness; vaccine efficacy; viruses; zoonoses.
. 2024 Jul;30(7):1430-1433.
doi: 10.3201/eid3007.230968.
Vaccine Effectiveness against SARS-CoV-2 among Household Contacts during Omicron BA.2-Dominant Period, Japan
Tsuyoshi Ogata, Hideo Tanaka, Akemi Kon, Noriko Sakaibori, Emiko Tanaka
- PMID: 38916601
- DOI: 10.3201/eid3007.230968
We calculated attack rates for household contacts of COVID-19 patients during the SARS-CoV-2 Omicron BA.2-dominant period in Japan. Attack rates among household contacts without recent (<3 months) vaccination was lower for contacts of index patients with complete vaccination than for contacts of index patients without complete vaccination, demonstrating indirect vaccine effectiveness.
Keywords: BA.2; COVID-19; COVID-19 vaccines; Contact tracing; Japan; Omicron; SARS-CoV-2; SARS-CoV-2 variants; attack rate; coronavirus; coronavirus disease; household contact; incidence; infectiousness; respiratory diseases; risk factors; vaccine effectiveness; vaccine efficacy; viruses; zoonoses.