In a randomized trial, the self-amplifying mRNA Covid vaccine approved in Japan as a booster induced higher levels of neutralizing antibodies than the @Pfizer booster at 6 and 12 months vs multiple strains
https://thelancet.com/journals/laninf/article/PIIS1473-3099(24)00615-7/fulltext… @TheLancetInfDis
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