#コロナウイルス
ドイチェ・ヴェレ「ブラジル変異種などにはワクチンがあまり効かない可能性も」
The Brazilian COVID-19 variant is of particular concern.
Vaccine protection would then lose effectiveness.
https://www.dw.com/en/coronavirus-mutations-can-people-who-have-recovered-or-been-vaccinated-be-infected-again/a-56289233