A novel coronavirus first discovered in late December 2019 has spread to many countries around the world. An increasing number of asymptomatic patients have been reported and their ability to spread the virus has been proven. This brings major challenges to the control of the transmission. The discovery and control of asymptomatic patients with COVID-19 are the key issues in future epidemic prevention and recovery. In this narrative review, we summarise the existing knowledge about asymptomatic patients and put forward detection methods that are suitable for finding such patients. Besides, we compared the characteristics and transmissibility of asymptomatic patients in different populations in order to find the best screening, diagnosis and control measures for different populations. Comprehensive preventive advice is also provided to prevent the spread of infection from asymptomatic patients.
- hospital care
- family management
- symptoms and symptom management
This article is made freely available for use in accordance with BMJ’s website terms and conditions for the duration of the covid-19 pandemic or until otherwise determined by BMJ. You may use, download and print the article for any lawful, non-commercial purpose (including text and data mining) provided that all copyright notices and trade marks are retained.https://bmj.com/coronavirus/usage
Statistics from Altmetric.com
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.
YY and XY contributed equally.
Contributors YY, XY, DH, QY, TW and MD contributed to the material collection and manuscript writing. All authors read and approved the final manuscript.
Funding This work was supported by the National Natural Science Foundation of China under contract (Nos. 31672290, 31100764), the Natural Science Foundation of Hunan Province, China (No. 2016JJ3180), Open Sharing Fund for the Large-scale Instruments and Equipments of Central South University (No. CSUZC2020043), National Undergraduate Innovation Training Program of Central South University (No. S2020105330717).
Competing interests None declared.
Provenance and peer review Not commissioned; externally peer reviewed.