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Feasibility and diagnostic accuracy of saliva-based SARS-CoV-2 screening in educational settings and children aged < 12 years
medRxiv - Infectious Diseases Pub Date : 2021-09-10 , DOI: 10.1101/2021.04.17.21255651
Martin Hoch , Sebastian Vogel , Ute Eberle , Laura Kolberg , Valerie Gruenthaler , Volker Fingerle , Nikolaus Ackermann , Andreas Sing , Bernhard Liebl , Johannes Huebner , Simone Kuttiadan , Anita Rack-Hoch , Melanie Meyer-Buehn , Tilmann Schober , Ulrich von Both

Children have been disproportionately affected during the COVID-19 pandemic. We aimed to assess a saliva-based algorithm for SARS-CoV-2 testing to be used in schools and childcare institutions under pandemic conditions. A weekly SARS-CoV-2 sentinel study in primary schools, kindergartens and childcare facilities was conducted over a 12-week-period. In a sub-study covering 7 weeks, 1895 paired oropharyngeal and saliva samples were processed for SARS-CoV-2 rRT-PCR testing in both asymptomatic children (n=1243) and staff (n=652). Forty-nine additional concurrent swab and saliva samples were collected from SARS-CoV-2 infected patients (patient cohort). The Salivette® system was used for saliva collection and assessed for feasibility and diagnostic performance. For children a mean of 1.18 ml saliva could be obtained. Based on results from both cohorts, the Salivette® testing algorithm demonstrated specificity of 100% (95% CI 99.7 - 100) and sensitivity of 94.9% (95% CI 81.4 - 99.1) with oropharyngeal swabs as reference. Agreement between sampling systems was 100% for moderate to high viral load situations (defined as Ct-values < 33 from oropharyngeal swabs). Comparative analysis of Ct-values derived from saliva vs. oropharyngeal swabs demonstrated a significant difference (mean 4.23; 95% CI 2.48–6.00). In conclusion, the Salivette® system proved to be an easy-to-use, safe and feasible saliva collection method and a more pleasant alternative to oropharyngeal swabs for SARS-CoV-2 testing in children aged 3 years and above.

中文翻译:

基于唾液的 SARS-CoV-2 筛查在教育机构和 12 岁以下儿童中的可行性和诊断准确性

在 COVID-19 大流行期间,儿童受到了不成比例的影响。我们旨在评估一种基于唾液的 SARS-CoV-2 测试算法,该算法将在大流行条件下用于学校和托儿机构。在为期 12 周的时间里,在小学、幼儿园和托儿所进行了每周一次的 SARS-CoV-2 哨兵研究。在一项涵盖 7 周的子研究中,对 1895 对口咽和唾液样本进行了处理,用于无症状儿童 (n=1243) 和工作人员 (n=652) 的 SARS-CoV-2 rRT-PCR 检测。从 SARS-CoV-2 感染患者(患者队列)中收集了另外 49 份并发拭子和唾液样本。Salivette® 系统用于唾液收集并评估可行性和诊断性能。对于儿童,可以获得平均 1.18 毫升的唾液。根据两个队列的结果,Salivette® 测试算法以口咽拭子作为参考证明了 100% (95% CI 99.7 - 100) 的特异性和 94.9% (95% CI 81.4 - 99.1) 的敏感性。对于中到高病毒载量情况(定义为口咽拭子的 Ct 值 < 33),采样系统之间的一致性为 100%。来自唾液与口咽拭子的 Ct 值的比较分析表明存在显着差异(平均 4.23;95% CI 2.48–6.00)。总而言之,Salivette® 系统被证明是一种易于使用、安全可行的唾液收集方法,是一种更令人愉快的替代口咽拭子的 3 岁及以上儿童 SARS-CoV-2 检测方法。对于中到高病毒载量情况(定义为口咽拭子的 Ct 值 < 33),采样系统之间的一致性为 100%。来自唾液与口咽拭子的 Ct 值的比较分析表明存在显着差异(平均 4.23;95% CI 2.48–6.00)。总而言之,Salivette® 系统被证明是一种易于使用、安全可行的唾液收集方法,是一种更令人愉快的替代口咽拭子的 3 岁及以上儿童 SARS-CoV-2 检测方法。对于中到高病毒载量情况(定义为口咽拭子的 Ct 值 < 33),采样系统之间的一致性为 100%。来自唾液与口咽拭子的 Ct 值的比较分析表明存在显着差异(平均 4.23;95% CI 2.48–6.00)。总而言之,Salivette® 系统被证明是一种易于使用、安全可行的唾液收集方法,是一种更令人愉快的替代口咽拭子的 3 岁及以上儿童 SARS-CoV-2 检测方法。
更新日期:2021-09-13
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