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预防医学  2022, Vol. 34 Issue (4): 325-329    DOI: 10.19485/j.cnki.issn2096-5087.2022.04.001
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入境人员集中隔离点新型冠状病毒核酸检测阳性病例特征分析
施长苗1, 敖新华2, 邵斌1, 杨卫锋3, 王伟洪4, 童照威4, 沈建勇5, 余育晖2
1.长兴县疾病预防控制中心行政办公室,浙江 长兴 313100;
2.长兴县卫生健康局,浙江 长兴 313100;
3.长兴县妇幼保健院,浙江 长兴 313100;
4.湖州市中心医院,浙江 湖州 313003;
5.湖州市疾病预防控制中心,浙江 湖州 313000
Characteristics of individuals positive for SARS-CoV-2 nucleic acid in a centralized isolation site for people entering China
SHI Changmiao1, AO Xinhua2, SHAO Bin1, YANG Weifeng3, WANG Weihong4, TONG Zhaowei4, SHEN Jianyong5, YU Yuhui2
1. Administrative Office of Changxing Center for Disease Control and Prevention, Changxing, Zhejiang 313100, China;
2. Changxing Health Bureau, Changxing, Zhejiang 313100, China;
3. Changxing Maternal and Child Health Hospital, Changxing, Zhejiang 313100, China;
4. Huzhou Central Hospital, Huzhou, Zhejiang 313003, China;
5. Huzhou Center for Disease Control and Prevention, Huzhou, Zhejiang 313000, China
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摘要 目的 了解浙江省湖州市某入境人员集中隔离点2021年12月18日—2022年1月12日新型冠状病毒(新冠病毒)核酸阳性病例特征,为新型冠状病毒肺炎(新冠肺炎)境外输入疫情防控提供依据。方法 收集该入境人员集中隔离点2021年12月18日—2022年1月12日境外输入新冠病毒核酸阳性病例的基本信息、核酸检测和流行病学调查资料,采用描述性流行病学方法分析病例核酸检测阳性时间分布、人群分布、输入来源和新冠病毒分型。结果 该入境人员集中隔离点2021年12月18日—2022年1月12日接收入境人员2 974人,检出新冠病毒核酸阳性33例,其中普通型21例,轻型9例,无症状感染者3例。感染奥密克戎毒株11例,占33.33%;德尔塔毒株5例,占15.15%;未分型毒株17例,占51.52%。病例入境至新冠病毒核酸检测阳性间隔时间MQR)为4.0(7.0)d;其中奥密克戎毒株感染病例为0(4.0)d,德尔塔毒株及未分型毒株感染病例为4.5(8.5)d。病例年龄为(36.97±8.58)岁;男性27例,占81.82%。接种过≥2剂次新冠病毒疫苗30例,占90.91%;既往感染过新冠肺炎7例,占21.21%。病例输入来源以非洲国家为主,19例占57.58%;11例奥密克戎毒株感染病例中7例来自非洲国家。结论 该入境人员集中隔离点2021年12月18日—2022年1月12日新冠病毒核酸阳性病例以奥密克戎毒株感染为主,无重症病例,主要来自非洲国家。
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施长苗
敖新华
邵斌
杨卫锋
王伟洪
童照威
沈建勇
余育晖
关键词 新型冠状病毒新型冠状病毒肺炎境外输入奥密克戎毒株    
AbstractObjective To analyze the characteristics of individuals positive for SARS-CoV-2 nucleic acid in a centralized isolation site for people entering China in Huzhou City of Zhejiang Province from December 18, 2021 to January 12, 2022, so as to provide insights into the prevention and control of overseas imported COVID-19. Methods The basic characteristics, nucleic acid detection and epidemiological investigations were collected from individuals positive for SARS-CoV-2 nucleic acid in a centralized isolation site for people entering China from December 18, 2021 to January 12, 2022, and the temporal distribution, population distribution, source of importation, and virus typing were descriptively analyzed. Results From December 18, 2021 to January 12, 2022, a total of 2 974 individuals in 19 flights were recorded in this centralized isolation site, and 33 cases were tested positive for SARS-CoV-2 nucleic acid, including 21 confirmed cases with common type, 9 confirmed cases with mild type, and 3 cases with asymptomatic infections. There were 11 cases with Omicron infections ( 33.33% ), 5 cases with Delta infections ( 15.15% ), and 17 cases with infection of unidentified types ( 51.52% ). The median interval ( interquartile range ) from the time of entry to the time of a positive test was 4.0 ( 7.0 ) days among all positive cases, 0 ( 4.0 ) day among cases with Omicron infections and 4.5 ( 8.5 ) days among cases with infections of Delta and unidentified types. The positive cases had a mean age of ( 36.97±8.58 ) years, and included 27 men (81.82%). There were 30 cases ( 90.91% ) receiving two and more doses of COVID-19 vaccines, and 7 cases ( 21.21% ) with a previous history of SARS-CoV-2 infections. There were 19 cases ( 57.58% ) from African countries, and 7 of 11 cases with Omicron infections were imported from African countries. Conclusion Omicron infection was predominant among individuals positive for SARS-CoV-2 nucleic acid in this centralized isolation site for people entering China from December 18, 2021 to January 12, 2022, with no severe cases detected, and most positive cases were imported from African countries.
Key wordsSARS-CoV-2    COVID-19    overseas importation    Omicron variant
收稿日期: 2022-01-17      修回日期: 2022-02-17      出版日期: 2022-04-10
中图分类号:  R563.14  
通信作者: 敖新华,E-mail:18967278006@163.com   
作者简介: 施长苗,本科,副主任医师,主要从事疾病防制和职业卫生工作
引用本文:   
施长苗, 敖新华, 邵斌, 杨卫锋, 王伟洪, 童照威, 沈建勇, 余育晖. 入境人员集中隔离点新型冠状病毒核酸检测阳性病例特征分析[J]. 预防医学, 2022, 34(4): 325-329.
SHI Changmiao, AO Xinhua, SHAO Bin, YANG Weifeng, WANG Weihong, TONG Zhaowei, SHEN Jianyong, YU Yuhui. Characteristics of individuals positive for SARS-CoV-2 nucleic acid in a centralized isolation site for people entering China. Preventive Medicine, 2022, 34(4): 325-329.
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http://www.zjyfyxzz.com/CN/10.19485/j.cnki.issn2096-5087.2022.04.001      或      http://www.zjyfyxzz.com/CN/Y2022/V34/I4/325
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