Arashiro Takeshi, Arima Yuzo, Kuramochi Jin, Muraoka Hirokazu, Sato Akihiro, Chubachi Kumi, Yanai Atsushi, Arioka Hiroko, Uehara Yuki, Ihara Genei, Kato Yasuyuki, Yanagisawa Naoki, Ueda Akihiro, Kato Hideaki, Oka Hideaki, Nishida Yusuke, Nidaira Yuki, Asami Takahiro, Jinta Torahiko, Nakamura Akira, Oba Kunihiro, Taniyama Daisuke, Yamamoto Kei, Tanaka Katsushi, Ueshima Kankuro, Fuwa Tetsuji, Stucky Ashley, Suzuki Tadaki, Smith Chris, Hibberd Martin, Ariyoshi Koya, Suzuki Motoi
Center for Surveillance, Immunization, and Epidemiologic Research, National Institute of Infectious Diseases, Tokyo, Japan.
Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan.
Open Forum Infect Dis. 2023 May 3;10(6):ofad240. doi: 10.1093/ofid/ofad240. eCollection 2023 Jun.
In this multicenter, prospective, test-negative, case-control study in Japan, the effectiveness of both BA.1-containing and BA.4/BA.5-containing bivalent coronavirus disease 2019 mRNA vaccines against symptomatic infection during the BA.5-dominant period was high compared with no vaccination (65% and 76%) and moderate compared with monovalent vaccines administered over half a year earlier (46% combined).
在日本开展的这项多中心、前瞻性、检测阴性的病例对照研究中,与未接种疫苗相比,含BA.1的二价和含BA.4/BA.5的二价2019冠状病毒病mRNA疫苗在BA.5为主的时期预防有症状感染的有效性较高(分别为65%和76%),与半年多前接种的单价疫苗相比则为中等(合并为46%)。