Since the outbreak of coronavirus disease 2019 (COVID-19) in late December 2019, it has brought significant harm and challenges to over 200 countries and regions around the world. However, there is increasing evidence that many patients with COVID-19 are asymptomatic or have only mild symptoms, but they are able to transmit the virus to others. There are difficulties in screening for asymptomatic infections, which makes it more difficult for national prevention and control of this epidemic. This article reviews the characteristics, treatment, and outcomes of asymptomatic infections with COVID-19, hoping it would be helpful for early prevention and control of this severe public health threat worldwide.

自2019年12月下旬爆发2019冠状病毒病（COVID-19）以来，给全球200多个国家和地区带来了重大危害和挑战。然而，越来越多的证据表明，许多 COVID-19 患者没有症状或只有轻微症状，但他们能够将病毒传播给其他人。无症状感染者筛查困难，给全国防控疫情增加了难度。本文综述了新型冠状病毒肺炎（COVID-19）无症状感染者的特征、治疗和结果，希望对全球范围内这一严重公共卫生威胁的早期预防和控制有所帮助。