In this multi-center study in Japan, the effectiveness of both BA.1-containing and BA.4/BA.5-containing bivalent vaccines against symptomatic infection during the BA.5-dominant period was high compared to no vaccination (65%/76%) and moderate compared to monovalent vaccines >6 months before (46% combined).
All Keywords
【저자키워드】 COVID-19, SARS-CoV-2, SARS-CoV-2 variants, vaccine effectiveness, test-negative design,
【저자키워드】 COVID-19, SARS-CoV-2, SARS-CoV-2 variants, vaccine effectiveness, test-negative design,