Lancet:西班牙新冠肺炎血清学阳性率调查研究

2020-07-07 MedSci原创 MedSci原创

研究认为,大多数西班牙人口对SARS-CoV-2病毒无免疫力,大多数核酸阳性患者血清学阳性,但至少三分之一血清学阳性患者是无症状的。这些结果强调,需要维持必要的疫情防控措施,以避免疫情复发

西班牙是受COVID-19大流行影响最大的欧洲国家之一。近日研究人员开展全国性人口研究,旨在估计西班牙国家和区域一级SARS-CoV-2感染的血清阳性率。
 
研究采用按省、市规模分层的两阶段随机抽样,从市政名册中选出35883个家庭。从2020年4月27日至5月11日,61075名参与者问卷并接受抗体测试。
 
监测点检测血清阳性率为5.0%,免疫分析法检测血清阳性率为4.6%,特异性敏感性范围为3.7%(3.3-4.0;两项检测均为阳性)至6.2%(5.8-6.6;均为阳性),性别差异不显著,但10岁以下儿童血清阳性率较低。检测结果存在很大的地理特异性,马德里周边的阳性率较高(>10%),但沿海地区较低(<3%)。PCR阳性的195名参与者的血清阳性率为87.6%(81.1-92.1;两项测试均为阳性)至91.8%(86.3-95.3;两项测试均为阳性)。在7273名存在嗅觉异常或至少有三种新冠肺炎症状的参与者中,血清阳性率从15.3%到19.3%不等。大约三分之一的血清阳性参与者无症状,范围从21.9%到35.8%。
 
研究认为,大多数西班牙人口对SARS-CoV-2病毒无免疫力,大多数核酸阳性患者血清学阳性,但至少三分之一血清学阳性患者是无症状的。这些结果强调,需要维持必要的疫情防控措施,以避免疫情复发。
 
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    2021-05-18 howi
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    2020-08-27 14818eb4m67暂无昵称

    学习了

    0

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    2020-07-07 公卫新人

    新冠肺炎,疫情何时才能消失

    0

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    2020-07-07 goodbing

    顶刊就是不一样,质量很高,内容精彩!学到很多

    0

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    2020-07-07 1e0bfbefm39(暂无匿称)

    有借鉴意义

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