西班牙一养老院70多人接种疫苗后全部阳性!至少7人死亡

2021-02-02 39健康网 39健康网

这次大暴发发生在马德里西南部托莱多地区一家疗养院,该养老院工作人员证实,已感染新冠病毒的78位居民中,大部分人此前患有疾病。

2月2日,据外媒报道,西班牙马德里一养老院78人接种第一剂辉瑞疫苗后,新冠检测结果呈阳性,至少7人死亡,4人已接受治疗,另有12名工作人员新冠病毒检测也呈阳性。

据该养老院的工作人员称,78名居民中,大部分患有疾病。而养老院发表的声明表示,一直都采取了严格的疫情防控措施,33名工作人员需提供PCR阴性证明才能工作。1月13日,养老院居民接种了第一剂瑞辉疫苗,6天后居民陆续出现新冠肺炎症状。

据了解,2月3日养老院居民或会安排接种第二剂辉瑞疫苗。

瑞辉疫苗,已并非第一次“出事”。此前有报道称,挪威有23名80岁的老人接种了瑞辉新冠疫苗后死亡,挪威药品管理局首席医师Sigurd Hortemo指出,mRNA疫苗常见的发烧、恶心等副作用或是导致体弱老人死亡的原因。

瑞辉新冠疫苗BNT162b2由药企瑞辉和德国BioNTech合作研发而成,与Moderna研制的同属于mRNA疫苗。mRNA疫苗的本质就是用脂质纳米粒等载体包裹一段能编码病毒目标蛋白的mRNA,进入人体细胞后,会产生传统疫苗的蛋白质成分,然后刺激免疫系统产生免疫力。

BNT162b2疫苗含有一段经优化的新冠病毒全长刺突糖蛋白mRNA,其在人体内诱导的中和抗体可阻止新冠病毒感染细胞。

根据WHO和FDA对于新冠疫苗的基础要求,有效性需要达到50%。此前,辉瑞疫苗4万余接种志愿者的3期临床数据显示,其有效性达95%。其中,21721人接种疫苗,21728人接种安慰剂。

不过,辉瑞公司曾宣称,第一剂疫苗接种后的有效率约为52%,第二剂疫苗接种后数天,有效率才会升至95%左右。英国医学协会(BMJ)的一份来自以色列的报告也显示,单剂辉瑞疫苗效果可能不如预期。

辉瑞疫苗接种以来,有效性一直都备受争议,2021年1月4日,《英国医学杂志》(BMJ)新闻与观点团队副主编彼得·多西(Peter Doshi)在杂志的博客网站上发文,指出辉瑞疫苗有效性或低至 “29%”,未达到世界卫生组织建议的最低标准50%。

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    2021-02-04 tulenzi
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    2021-02-02 ms2000001990428324

    老年病人抵抗力弱,遇到新冠就容易重症

    0

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    2021-02-02 weigq

    ???

    0

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