Lancet:阿根廷疫苗数据表明灭活疫苗对老年人预防死亡有效率为85%,但疗效低于其它两种疫苗

2022-03-21 网络 网络

3月15日,阿根廷国家流行病学和国家战略信息局局长Analía Rearte在国际权威医学期刊《柳叶刀》(《The Lancet》)发表新冠疫苗真实世界研究文章,揭示了三款疫苗的效果,其

3月15日,阿根廷国家流行病学和国家战略信息局局长Analía Rearte在国际权威医学期刊《柳叶刀》(《The Lancet》)发表新冠疫苗真实世界研究文章,揭示了三款疫苗的效果,其中包括国药集团中国生物新冠灭活疫苗(BBIBP-CorV)。

研究显示,对于60岁及以上的老年人,接种两剂国药中国生物新冠灭活疫苗后,对减少死亡风险的有效率为85%。

这篇论文题为《Effectiveness of rAd26-rAd5, ChAdOx1 nCoV-19, and BBIBP-CorV vaccines for risk of infection with SARS-CoV-2 and death due to COVID-19 in people older than 60 years in Argentina: a test-negative, case-control, and retrospective longitudinal study》。该研究对疫苗效果进行了回顾性研究,旨在评估在60岁及以上的老年人中,疫苗对减少感染新冠风险的有效率及对减少因新冠死亡的有效率。

该研究比较了三种疫苗在真实世界中的作用,包括俄罗斯的两种腺病毒载体新冠疫苗rAd26-rAd5,ChAdOx1 nCoV-19(牛津-阿斯利康)重组腺病毒载体疫苗和国药灭活疫苗BBIBP-CorV。

 

A显示了研究期间阿根廷每周新增事件病例和死亡病例数量;B显示了阿根廷不同变异株的分布;C显示了各流行病周疫苗接种率的变化。

该研究使用的数据来自阿根廷国家监测系统(SNVS 2.0),向SNVS 2.0报告的所有60岁及以上疑似患有新冠肺炎并通过RT-PCR(实时逆转录-聚合酶链反应)确认的个体,都被纳入研究。

从2021年1月31日到9月14日,该研究共纳入1282928人,其中237330(18.5%)人被纳入国药中国生物新冠灭活疫苗分析,剩余的人纳入另外两款疫苗的分析。

该研究用Logistic回归评估感染新冠的优势比,通过比例风险回归模型评估新冠患者的死亡风险,并对可能的混杂因素进行了调整,如出现症状时的年龄、性别、居住地区、症状出现时对应的流行病周及新冠病史。疫苗预防因新冠死亡的有效率通过结合感染和死亡的评估来间接评估。

 

研究者表示,在这项研究开始前,国药灭活疫苗对老年人的有效性还未有研究报道。据其所知,这是第一项在中等收入国家的真实世界环境中评估三款疫苗有效性的研究。

研究发现,对于60岁及以上的老年人,接种两剂国药中国生物新冠灭活疫苗后,疫苗减少死亡风险的作用比减少感染风险的作用更显著。国药中国生物新冠灭活疫苗减少死亡风险的间接估计有效率为85%。

不过,与其它两种疫苗相比,仍然较大差距,另两种疫苗有效率均超过93%。在高龄老人(80岁以上)的死亡的预防效果中,表现尚可,灭活疫苗预防死亡的有效率为69.4%。

这是第一项在中等收入国家的真实世界环境中评估三款疫苗有效性的研究。该研究表明,在阿根廷全国疫苗接种运动背景下,风险较高的60岁及以上人群接种疫苗能够有效地预防新冠感染,且更为有效地预防因患新冠死亡。

原始出处:

Rearte A, Castelli JM, Rearte R, Fuentes N, Pennini V, Pesce M, Barbeira PB, Iummato LE, Laurora M, Bartolomeu ML, Galligani G, Del Valle Juarez M, Giovacchini CM, Santoro A, Esperatti M, Tarragona S, Vizzotti C.Effectiveness of rAd26-rAd5, ChAdOx1 nCoV-19, and BBIBP-CorV vaccines for risk of infection with SARS-CoV-2 and death due to COVID-19 in people older than 60 years in Argentina: a test-negative, case-control, and retrospective longitudinal study.Lancet. 2022 Mar 15:S0140-6736(22)00011-3.

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    2022-07-02 howi
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    2022-03-21 yangchou

    研究显示,对于60岁及以上的老年人,接种两剂国药中国生物新冠灭活疫苗后,对减少死亡风险的有效率为85%。

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=2078880, encodeId=fc2a20e888074, content=<a href='/topic/show?id=f48865242bb' target=_blank style='color:#2F92EE;'>#活疫苗#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=65242, encryptionId=f48865242bb, topicName=活疫苗)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e4aa106, createdName=crystal0562, createdTime=Sat Oct 08 09:36:39 CST 2022, time=2022-10-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1818551, encodeId=dcbf1818551f7, content=<a href='/topic/show?id=5fda9e85177' target=_blank style='color:#2F92EE;'>#阿根廷#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97851, encryptionId=5fda9e85177, topicName=阿根廷)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b3ad2500191, createdName=12498dd9m11暂无昵称, createdTime=Wed Nov 16 08:36:39 CST 2022, time=2022-11-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1831508, encodeId=6acb1831508f0, content=<a href='/topic/show?id=1b6210686b2' target=_blank style='color:#2F92EE;'>#Lancet#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10686, encryptionId=1b6210686b2, topicName=Lancet)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3f0227, createdName=howi, createdTime=Sat Jul 02 00:36:39 CST 2022, time=2022-07-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1204658, encodeId=ed591204658cf, content=研究显示,对于60岁及以上的老年人,接种两剂国药中国生物新冠灭活疫苗后,对减少死亡风险的有效率为85%。, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJlfgys76DEiaNtbYo2re3ibjrUPTRibEXRyFwAB4aAGiave842S0FQDf0wAoaH226NiaSoPPDzhndsf1g/132, createdBy=88b489038, createdName=yangchou, createdTime=Mon Mar 21 16:40:19 CST 2022, time=2022-03-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1204574, encodeId=c90212045e493, content=从这里看,至少应该可以说明: 1 灭活疫苗两针后,加强针应该是异源接种 2 对于高龄老人,应该接种3-4针,或接种mRNA疫苗更好。灭活疫苗不理想, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20220519/c2ab253484ee4527a2d4e9589a4821ac/45de9bf494a54becb2ea4369c9d11e85.jpg, createdBy=7a3710, createdName=医者仁者, createdTime=Mon Mar 21 11:40:27 CST 2022, time=2022-03-21, status=1, ipAttribution=)]
    2022-03-21 医者仁者

    从这里看,至少应该可以说明: 1 灭活疫苗两针后,加强针应该是异源接种 2 对于高龄老人,应该接种3-4针,或接种mRNA疫苗更好。灭活疫苗不理想

    0

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