在马萨诸塞州公立学区的COVID-19诊断后",返回测试"的评估
Sandra B Nelson1, Isaac Ravi Brenner2, Elizabeth Homan3
1Division of Infectious Diseases, Massachusetts General Hospital, Boston, MA; Harvard Medical School, Boston, MA.
The Journal of school health
|June 5, 2023
概括
在COVID-19隔离五天后,很大一部分学生仍然具有传染性. 测试返回计划可以影响错过的学校日,但它们对传播的影响需要进一步研究.
科学领域:
- 公共卫生 公共卫生
- 传染病流行病学 传染病流行病学
- 儿科健康 儿科健康
背景情况:
- 目前疾病控制和预防中心 (CDC) 的指导方针允许COVID-19隔离在5天后结束,如果症状改善,但传染性可能会持续.
- 快速抗原检测是一种识别潜在感染个体的工具.
- 在马萨诸塞州的一个学区实施了一项测试返学 (TTR) 计划,以评估返学政策.
研究的目的:
- 在Omicron BA.1激增期间,评估一个学区测试返回计划的实用性.
- 为了告知有关学生在COVID-19感染后返校的政策决策.
- 分析影响学生积极快速测试结果的因素.
主要方法:
- 在2021-2022年Omicron BA.1激增期间,患有COVID-19的学生可以在6-10天以阴性快速测试的方式返回,或者在阳性或下降测试的情况下,在11天之前隔离.
- 测试至返回 (TTR) 阳性率在不同学年级,疫苗接种状态,症状呈现和感染后几天之间进行了比较.
- 数据收集的重点是识别那些试图返回学校时仍有可能感染的学生.
主要成果:
- 31.4%的学生通过TTR计划进行了快速抗原测试,结果呈阳性,并没有根据年级或疫苗接种情况观察到显著差异.
- 那些经历过症状 (一直有症状) 的学生比那些没有症状 (17.3%) 的学生更有可能检测出阳性 (43.1%).
- 对于那些始终有症状的学生来说,随着感染开始后的天数增加,TTR测试阳性结果的可能性会降低.
结论:
- 在COVID-19症状出现六天后,相当一部分学生可能仍然具有传染性.
- 测试返学计划可以影响错过学校日的数量,结果根据现有的返学政策 (例如第6天和第11天) 不同.
- 测试返回计划对减少与学校相关的SARS-CoV-2传播的影响仍未确定.
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