| 吴尊友.新型冠状病毒肺炎无症状感染者在疫情传播中的作用与防控策略[J].Chinese journal of Epidemiology,2020,41(6):801-805 |
| 新型冠状病毒肺炎无症状感染者在疫情传播中的作用与防控策略 |
| Contribution of asymptomatic and pre-symptomatic cases of COVID-19 in spreading virus and targeted control strategies |
| Received:April 06, 2020 |
| DOI：10.3760/cma.j.cn112338-20200406-00517 |
| KeyWord: 新型冠状病毒肺炎 无症状感染者 传染性 防控策略 |
| English Key Word: COVID-19 Asymptomatic and pre-symptomatic cases Infectiousness Control strategy |
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| Abstract: |
| 新型冠状病毒肺炎（新冠肺炎）无症状感染者成为我国防控疫情反弹的热点问题。本文介绍新冠肺炎无症状感染者现象、定义、发现过程与疫情报告和统计规则，阐述初诊为无症状感染者在跟踪观察一个最长潜伏期后，病情自然发展变化将其化分为隐性感染无症状感染者和潜伏期无症状感染者两大类，利用现有数据分析无症状感染者的传染性及其对疫情传播扩散的作用，探讨我国防止无症状感染者可能造成疫情反弹所面临的挑战，并提出防控及研究相关建议。 |
| English Abstract: |
| The asymptomatic carrier state of COVID-19 has become a topic of concern for preventing the rebound of possible epidemic. This review describes and defines the COVID-19 asymptomatic carrier state and outlines the methods for identifying, counting and reporting of these cases. The author elaborates that the asymptomatic carrier state can be further divided into asymptomatic infection and pre-symptomatic infection after extended follow-up based on the nature of the disease progression. The author presents the limited available data about the infectivity of asymptomatic and pre-symptomatic cases and their possible contributions to the overall epidemic of COVID-19 observed so far in China. Challenges of a possible second epidemic wave of COVID-19 caused by asymptomatic and pre-symptomatic cases are discussed and suggestions for control strategies and scientific research are provided. |
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