With more than 1bn coronavirus vaccine doses administered to adults around the world, debate is turning to the contentious question of whether or when to extend vaccinations to children.
全球已為成年人接種逾10億劑新型冠狀病毒肺炎(COVID-19,即2019冠狀病毒病)疫苗,現(xiàn)在辯論正在轉(zhuǎn)向一個(gè)有爭(zhēng)議的問(wèn)題:是否或何時(shí)應(yīng)該為兒童接種新冠疫苗?
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