1.安庆师范大学生命科学学院,安徽 安庆 246133
2.中山大学生命科学学院,广东 广州510275
孙廷哲(1985年生),男;研究方向:系统生物学;E-mail:confucian007@126.com
崔隽(1982年生),男;研究方向:免疫和系统生物学;E-mail:cuij5@mail.sysu.edu.cn
纸质出版日期:2021-09-25,
网络出版日期:2021-06-15,
收稿日期:2021-01-18,
录用日期:2021-05-07
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孙廷哲,崔隽.模拟新型冠状病毒肺炎无症状感染者传播风险[J].中山大学学报(自然科学版),2021,60(05):103-110.
SUN Tingzhe,CUI Jun.Modeling the asymptomatic infections for COVID-19 epidemic[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2021,60(05):103-110.
孙廷哲,崔隽.模拟新型冠状病毒肺炎无症状感染者传播风险[J].中山大学学报(自然科学版),2021,60(05):103-110. DOI: 10.13471/j.cnki.acta.snus.2021E003.
SUN Tingzhe,CUI Jun.Modeling the asymptomatic infections for COVID-19 epidemic[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2021,60(05):103-110. DOI: 10.13471/j.cnki.acta.snus.2021E003.
新型冠状病毒肺炎(COVID-19,coronavirus disease 2019)的大流行对人类健康造成了巨大威胁。新型冠状病毒肺炎无症状感染者在早期不易被察觉和诊断,但同时具备病毒传播能力。为研究无症状感染者对新型冠状病毒肺炎传播的影响,本文基于之前建立的SCIRA微分方程模型与实际流行病学数据拟合并进行随机模拟。结果显示人群中无症状感染者的完全消除时间显著迟于确诊病例首次清零时间。严格的隔离防控手段可以降低人群间接触,有效阻断病毒传播。若严密防控措施不能在确诊病例全部治愈后予以保持,潜在的无症状感染者将可能诱导第二次疫情暴发。因此,即使确诊病例实现清零,仍需持续实施严格防控措施以遏制潜在的新型冠状病毒肺炎传播。
The pandemic of emerging coronavirus disease 2019 (COVID-19) has been a serious threat to public health. Specifically, the asymptomatic patients are not easily identified but contribute significantly to coronavirus transmission. We used a previously developed SCIRA model with asymptomatic populations, fitted the model to the epidemic data and performed stochastic simulations. The results showed that complete recovery of asymptomatic patients usually showed remarkable delays compared to that of diagnosed cases. The mutual contacts among populations can be significantly lowered under strictly controlled measures to impede COVID-19 transmission. If strict interventions are only maintained for short durations after curation of all diagnosed patients, there might be potentially a second outbreak owing to asymptomatic patients. Therefore, strict interventions should be continuously implemented to impede potential COVID-19 transmission even after diagnosed patients are all cured.
新型冠状病毒肺炎严格防控无症状感染者延迟治愈
COVID-19strict interventionasymptomatic patientdelayed recovery
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