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目的了解浙江省人感染H7N9禽流感监测病例的流行特点。方法对浙江省2013年4月1—24日报告的人感染H7N9禽流感监测病例进行描述流行病学分析。结果截至2013年4月24日,浙江省共报告人感染H7N9禽流感监测病例280例,其中确诊46例,排除234例,确诊阳性率为16.43%,轻症病例占15.22%;确诊病例主要分布在杭州市和湖州市;监测病例中男女比例为1.2,排除病例中位年龄(38岁)较确诊病例(62岁)小,确诊病例白细胞中位数(3.58×109/L)较排除病例(6.27×109/L)低。结论浙江省人感染H7N9禽流感监测病例的地区分布相对集中,确诊病例以中老年男性为主,重症病例居多,且确诊病例的白细胞计数相对较低。
Objective To understand the epidemiological characteristics of H7N9 bird flu surveillance in Zhejiang Province. Methods The epidemiological analysis of human surveillance of H7N9 bird flu reported by Zhejiang Province on April 24-24, 2013 was conducted. Results As of April 24, 2013, a total of 280 cases of H7N9 bird flu were reported in Zhejiang Province, of which 46 cases were diagnosed and 234 cases were excluded. The positive rate was 16.43% and mild cases accounted for 15.22%. The main distributions of confirmed cases In Hangzhou and Huzhou, the ratio of male to female in the surveillance cases was 1.2, the median age of exclusion cases (38 years) was smaller than the confirmed cases (62 years), and the median of confirmed white blood cells (3.58 × 109 / L) 6.27 × 109 / L) is low. Conclusion The distribution of H7N9 bird flu surveillance in Zhejiang Province is relatively concentrated. Middle-aged and elderly patients are the main diagnosed cases. The majority of severe cases are diagnosed and the white blood cell count of the confirmed cases is relatively low.