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首页> 外文期刊>BMC Infectious Diseases >Low Seroprevalence of SARS-CoV-2 in Rhode Island blood donors during may 2020 as determined using multiple serological assay formats
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Low Seroprevalence of SARS-CoV-2 in Rhode Island blood donors during may 2020 as determined using multiple serological assay formats

机译:在5月2020年5月在5月2020年5月在罗德岛献血者中低血清伪装,如使用多种血清学测量格式测定

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Epidemic projections and public health policies addressing Coronavirus disease (COVID)-19 have been implemented without data reporting on the seroconversion of the population since scalable antibody testing has only recently become available. We measured the percentage of severe acute respiratory syndrome- Coronavirus-2 (SARS-CoV-2) seropositive individuals from 2008 blood donors drawn in the state of Rhode Island (RI). We utilized multiple antibody testing platforms, including lateral flow immunoassays (LFAs), enzyme-linked immunosorbent assays (ELISAs) and high throughput serological assays (HTSAs). To estimate seroprevalence, we utilized the Bayesian statistical method to adjust for sensitivity and specificity of the commercial tests used. We report than an estimated seropositive rate of RI blood donors of approximately 0.6% existed in April–May of 2020. Daily new case rates peaked in RI in late April 2020. We found HTSAs and LFAs were positively correlated with ELISA assays to detect antibodies specific to SARS-CoV-2 in blood donors. These data imply that seroconversion, and thus infection, is likely not widespread within this population. We conclude that IgG LFAs and HTSAs are suitable to conduct seroprevalence assays in random populations. More studies will be needed using validated serological tests to improve the precision and report the kinetic progression of seroprevalence estimates.
机译:在没有数据报告的情况下,已经实施了处理冠状病毒疾病(CoVID)-19的流行病征和公共卫生政策,因为可扩展抗体测试只能可用。从2008年罗德岛(RI)绘制的2008年献血者中,测量了2008年献血者的严重急性呼吸综合征 - 冠状病毒-2(SARS-COV-2)血清阳性百分比的百分比。我们利用多种抗体检测平台,包括横向流动免疫测定(LFA),酶联免疫吸附测定(ELISAS)和高通量血清学检测(HTSAS)。为了估算SEROPREVALING,我们利用贝叶斯统计方法来调整使用的商业测试的灵敏度和特异性。我们报告了2020年4月至5月份存在的RI献血者的估计血清率约0.6%.2020年4月下旬的日常新案例率。我们发现HTSAS和LFA与ELISA测定呈正相关,以检测特异性的抗体在献血者中的SARS-COV-2。这些数据意味着血清转换,从而感染,可能在这个人群中不受欢迎。我们得出结论,IgG LFA和HTSAS适用于在随机群体中进行Seroprevalence测定。使用验证的血清学检测将需要更多的研究,以改善精确度并报告Seroprevalence估计的动力学进展。

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