US government advisers have recommended changing the design of Covid-19 vaccines to target the Omicron variant for a booster campaign aimed at blunting an expected surge in infections in the autumn.
美國政府顧問建議改變新冠疫苗的設計,以奧密克戎變體為目標,開展加強針接種,以緩解秋季感染預計激增的趨勢。
您已閱讀6%(250字),剩余94%(3947字)包含更多重要信息,訂閱以繼續探索完整內容,并享受更多專屬服務。