南非的无症状新冠病毒感染——对传播控制的影响
Asymptomatic COVID-19 in South Africa - implications for the control of transmission.
作者信息
Paleker M, Tembo Y A, Davies M-A, Mahomed H, Pienaar D, Madhi S A, McCarthy K
机构信息
Division of Health Systems and Public Health, Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
Metro Health Services, Western Cape Department of Health, Cape Town, South Africa.
出版信息
Public Health Action. 2021 Jun 21;11(2):58-60. doi: 10.5588/pha.20.0069.
Abstract
Asymptomatic COVID-19 may contribute significantly to the pandemic trajectory based on global biological, epidemiological and modelling evidence. A retrospective analysis was done to determine the proportion of asymptomatic COVID-19 in the workplace during the lockdown period from 27 March to 31 May 2020. We found that nearly 45% of cases were asymptomatic at the time of the first test. This high proportion of asymptomatic COVID-19 cases has implications for interventions, such as enforcing quarantine of all close contacts of COVID-19 cases regardless of symptoms.
摘要
基于全球生物学、流行病学和建模证据，无症状新冠病毒感染可能对疫情发展轨迹产生重大影响。我们进行了一项回顾性分析，以确定2020年3月27日至5月31日封锁期间工作场所无症状新冠病毒感染的比例。我们发现，首次检测时近45%的病例无症状。如此高比例的无症状新冠病毒感染病例对干预措施有影响，比如对所有新冠病毒感染病例的密切接触者无论有无症状都实施隔离。
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