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以色列的一项初步研究显示,第四针新冠病毒疫苗尽管比第三针疫苗的抗体水平更高,但仍不足以预防Omicron变种感染。
以色列Sheba医疗中心传染病科主任Gili Regev-Yochay说,该中心已经在其工作人员中进行了第二次疫苗加强接种的试验,并正在研究154人强化接种辉瑞疫苗两周后和120人强化接种Moderna疫苗一周后的效果。
该研究将这些人与没有接受第四剂注射的对照组进行了比较。这家医院表示,Moderna组的受试者此前曾注射过三针辉瑞公司的疫苗。
Regev-Yochay说,疫苗强化接种后,导致了抗体数量的增加,“甚至比我们在第三针注射后的抗体数量还要高一点”。
“但是,对Omicron变种的预防来说可能还不够,”她告诉记者。
这个被该医院称之为世界上第一个此类发现的研究结果尚未公开发表。
来源:REUTERS;编译:POLARZONE
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