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July 22, 2021
Uncategorized

全美一半人口打第一劑疫苗 莫德納對青少年100%有效

莫德納藥廠(Moderna)25日公布2/3期臨床試驗數據,顯示其所研發的新冠疫苗在12到17歲青少年身上有效率達100%,也未發現重大安全問題,預計下個月向食品及藥物管理局(FDA)申請,尋求授權批准,成為得以對青少年施打的疫苗之一。

莫德納在全美招募了3732名12到17歲的受試者,結果接種者無人感染,也未發現重大安全問題。數據顯示,接種第一劑的有效性是93%,接種第二劑兩週後可達100%,僅有頭痛、疲憊、畏寒、肌肉痠痛等輕微副作用。

這是繼德國BioNTech和輝瑞(Pfizer)合作研發的疫苗後,第二款確認在青少年身上高度有效的疫苗。本月10日,輝瑞已獲得FDA授權,莫德納也將在下個月提出申請,加入給孩童、青少年施打的疫苗行列。

在此同時,全美疫情趨緩,23日單日新增確診與病歿人數持續下滑,降至一年多以來最低。根據聯邦疾病防治中心(CDC)24日數據,全美約逾49.4%總人口、61.5%成人已接種至少一劑疫苗;約39.3%總人口、49.8%成人接種完畢。

全美25州與華府也為至少半數成人接種完疫苗,政府官員肯定疫苗計畫有助抑制確診者出現重症與傳播病毒。

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