ｍＲＮＡワクチンのブースター、オミクロン株の感染防がず－南ア研究

A technician wearing a full body protection suit pours material inside a biosafety level 3 Covid-19 research laboratory at the African Health Research Institute (AHRI) in Durban, South Africa, on Wednesday, Dec. 15, 2021. Photographer: Waldo Swiegers/Bloomberg 米ファイザーと独ビオンテックが開発し...