Effectiveness of BA.1- and BA.4/BA.5-containing bivalent COVID-19 mRNA vaccines against symptomatic SARS-CoV-2 infection during the BA.5-dominant period in Japan
Takeshi Arashiro 
;
Yuzo Arima;
Jin Kuramochi;
Hirokazu Muraoka;
Akihiro Sato;
Kumi Chubachi;
Atsushi Yanai;
Hiroko Arioka;
Yuki Uehara;
Genei Ihara;
+22 more...
Yasuyuki Kato;
Naoki Yanagisawa;
Akihiro Ueda;
Hideaki Kato ;
Hideaki Oka;
Yusuke Nishida;
Yuki Nidaira;
Takahiro Asami ;
Torahiko Jinta;
Akira Nakamura;
Kunihiro Oba;
Daisuke Taniyama;
Kei Yamamoto;
Katsushi Tanaka;
Kankuro Ueshima;
Tetsuji Fuwa;
Ashley Stucky;
Tadaki Suzuki;
Chris Smith ;
Martin Hibberd;
Koya Ariyoshi ;
Motoi Suzuki;
(2023)
Effectiveness of BA.1- and BA.4/BA.5-containing bivalent COVID-19 mRNA vaccines against symptomatic SARS-CoV-2 infection during the BA.5-dominant period in Japan.
Open forum infectious diseases.
ISSN 2328-8957
DOI: 10.1093/ofid/ofad240
;
Yuzo Arima;
Jin Kuramochi;
Hirokazu Muraoka;
Akihiro Sato;
Kumi Chubachi;
Atsushi Yanai;
Hiroko Arioka;
Yuki Uehara;
Genei Ihara;
+22 more...
Yasuyuki Kato;
Naoki Yanagisawa;
Akihiro Ueda;
Hideaki Kato ;
Hideaki Oka;
Yusuke Nishida;
Yuki Nidaira;
Takahiro Asami ;
Torahiko Jinta;
Akira Nakamura;
Kunihiro Oba;
Daisuke Taniyama;
Kei Yamamoto;
Katsushi Tanaka;
Kankuro Ueshima;
Tetsuji Fuwa;
Ashley Stucky;
Tadaki Suzuki;
Chris Smith ;
Martin Hibberd;
Koya Ariyoshi ;
Motoi Suzuki;
(2023)
Effectiveness of BA.1- and BA.4/BA.5-containing bivalent COVID-19 mRNA vaccines against symptomatic SARS-CoV-2 infection during the BA.5-dominant period in Japan.
Open forum infectious diseases.
ISSN 2328-8957
DOI: 10.1093/ofid/ofad240
In this multi-center prospective test-negative case-control study in Japan, the effectiveness of both BA.1-containing and BA.4/BA.5-containing bivalent COVID-19 mRNA vaccines against symptomatic infection during the BA.5-dominant period was high compared to no vaccination (65% and 76%) and moderate compared to monovalent vaccines administered over half a year before (46% combined).
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picture_as_pdf - Arashiro-etal-2023-effectiveness-of-BA1.pdf
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subject - Published Version
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- Available under Creative Commons: NC-ND 3.0
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