目的 分析周口市新型冠状病毒肺炎(COVID-19)的流行特征,探讨防控对策。方法 采取描述性流行病学方法对周口市2020年1月1日—2020年12月31日COVID-19监测数据与相关资料进行分析。结果 2020年1月23日—2月17日(2月18日以后未发现新冠肺炎病例),周口市累计报告COVID-19确诊病例76例,发病率0.87/10万。发病平均年龄(42.28±14.99)岁。农民、商业服务、家务及待业者病例数占82.89%,不同职业人群的病例数构成比差异有统计学意义(χ²=63.529,P＜0.05);有武汉旅居史者43例,与武汉有关的间接暴露者33例;聚集性疫情13起,共43例,其中29例本地续发病例。武汉暴露导致的家庭生活聚集、同学聚餐、共同返乡、医疗活动为主的聚集性病例占84.62%。结论 周口市的新型冠状病毒肺炎疫情,主要是武汉直接及间接暴露感染所致。人际传播主要发生在家庭生活和聚集活动中;疫情本地传播已基本阻断,常态化防控应实施人物同防的科学精准策略,防止由境外输入病例与冷链食品污染引发的疫情反弹。

Objective To analyze the epidemic characteristics of COVID-19 in Zhoukou City and discuss the prevention and control countermeasures. Methods Descriptive epidemiological method was used to analyze the COVID-19 surveillance data and related data in Zhoukou City from January 1,2020 to December 31,2020. Results From January 23 to February 17,2020 (no COVID-19 cases were found after February 18),a total of 76 confirmed cases of COVID-19 were reported in Zhoukou City,with an incidence rate of 0.87/100,000.The mean age of onset was (42.28±14.99) years old.Farmers,commercial service workers,domestic workers and unemployed workers accounted for 82.89% of the cases,and there was a statistically significant difference in the composition ratio of the number of cases among different occupational groups (χ²=63.529,P＜ 0.05).A total of 43 patients had a history of living in Wuhan City,and 33 patients had indirect exposure related to Wuhan City.There were 13 clustered outbreaks involving 43 cases,of which 29 were local secondary cases.84.62% of the cluster cases were mainly caused by exposure in Wuhan City,such as family life gathering,classmates dining together,returning home together,and medical activities. Conclusion The COVID-19 cases in Zhoukou City were mainly caused by direct and indirect exposure transmission related to Wuhan City.Interpersonal transmission occurs mainly in close contact in family life and gathering activities.Local transmission of the epidemic has been basically blocked,and a scientific and precise strategy should be implemented to prevent the epidemic rebound caused by imported cases from abroad and contamination of cold-chain food.