Pre-symptomatic and asymptomatic transmission of COVID-19: Implications for control measures in Qatar.
Pre-symptomatic and asymptomatic transmission of COVID-19: Implications for control measures in Qatar.
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DOI：
10.5339/qmj.2021.59
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发表时间：
2021
影响因子：
--
通讯作者：
Emara MM
中科院分区：
文献类型：
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作者：
Tawe Ngi AM;Johnston S;Albayat SS;Bansal D;Ahmed S;Sallam MA;Al-Romaihi HE;Al-Thani M;Farag E;Emara MM
传染病的公共卫生控制措施往往以查明有症状的病例为基础。然而，新出现的流行病学证据证明了2019冠状病毒病（COVID-19）症状前和无症状传播的作用。了解没有症状的受感染者可能发生传播的高风险环境，对于改善应对这一流行病的工作至关重要。在这篇综述中，我们讨论了严重急性呼吸综合征冠状病毒2传播的证据，其对控制策略的影响，以及可以在卡塔尔应用的经验教训。虽然卡塔尔人口不多，但它在COVID-19控制方面有着独特的环境。卡塔尔人口主要是年轻人，主要由居住在卡塔尔工作的外籍人士组成，特别是来自中东和亚洲的外籍人士。卡塔尔和旅行的其他主要考虑因素包括：宗教节日延长期间的人口流动、在入境点对游客和居民进行筛查和追踪，以及在高密度环境中生活和工作的外籍人士。我们还考虑了其国际机场如何成为该地区的主要过境目的地，因为卡塔尔在准备举办2022年FIFA世界杯期间预计将经历游客的快速增长。
Public health control measures for communicable diseases are often based on the identification of symptomatic cases. However, emerging epidemiological evidence demonstrates the role of pre-symptomatic and asymptomatic transmissions of coronavirus disease 2019 (COVID-19). Understanding high-risk settings where transmissions can occur from infected individuals without symptoms has become critical for improving the response to the pandemic. In this review, we discussed the evidence on the transmission of severe acute respiratory syndrome coronavirus-2, its effect on control strategies, and lessons that can be applied in Qatar. Although Qatar has a small population, it has a distinct setting for COVID-19 control. It has a largely young population and is mostly composed of expatriates particularly from the Middle East and Asia that reside in Qatar for work. Further key considerations for Qatar and travel include population movement during extended religious holiday periods, screening and tracing of visitors and residents at entry points into the country, and expatriates living and working in high-density settings. We also consider how its international airport serves as a major transit destination for the region, as Qatar is expected to experience a rapid expansion of visitors while preparing to host the FIFA World Cup in 2022.