摘要
目的对内江市新型冠状病毒引起的聚集性疫情进行调查分析,探讨流行特征。方法采用回顾性调查方法,按照国家卫生健康委《新型冠状病毒感染的肺炎防控方案(第五版)》中的病例流行病学调查方案,通过查阅病历并结合现场流行病学调查,对结果进行描述性分析。结果截至2020年2月14日,内江市共发生聚集性疫情6起,报告确诊病例18例,暴露人数261人,平均罹患率6.90%。疫情集中发生在1月24日至2月11日,家庭聚集5起,公共场所(茶楼)聚集1起。3起聚集性疫情存在代际,病例潜伏期中位数7.5 d。首发症状发热占44.45%,干咳占44.45%;胸部CT呈新型冠状病毒肺炎表现占88.89%。结论内江市新型冠状病毒肺炎聚集性疫情以家庭聚集为主,应做好自我防护和隔离,避免家庭聚集等社交活动,以降低发生暴发风险。
Objective To investigate epidemiological characteristics of cluster outbreak caused by COVID-19 in Neijiang City. Methods According to the case epidemiological investigation plan from the COVID-19 prevention and control scheme(Fifth Edition)of the National Health Committee and using retrospective survey method,data were collected and descriptively analyzed by referring to medical records and combining with field epidemiological investigation.Results Six cluster outbreaks occurred from January 24 to February 11 in Neijiang City,with 18 confirmed cases and261 exposed persons. The average attack rate was 6.90%. Of the 6 outbreaks,5 were family clusters and one occurred in a public place(teahouse). Three clusters were intergenerational,with a median incubation period of 7.5 days. Of all the cases,44.45% had fever as the first symptom,44.45% had dry cough,and 88.89% had chest CT findings of COVID-19.Conclusion The outbreaks of COVID-19 occurring in Neijiang were mainly caused by the family gatherings. It should be emphasized to take measures for self-protection and isolation,avoid social activities such as family gatherings,so as to reduce the risk of COVID-19 outbreaks.
作者
王婉薇
周思韩
应俊强
谢丹
张琴
孙毅
WANG Wan-wei;ZHOU Si-han;YING Jun-qiang;XIE Dan;ZHANG Qin;SUN Yi(Neijiang Municipal Center for Disease Control and Prevention,Neijiang 64100,China)
出处
《华南预防医学》
2020年第3期243-246,共4页
South China Journal of Preventive Medicine
