陕西省榆林市某县规模鸡场H7亚型流感血清学调查与风险因素分析  

Serological Investigation and Risk Factor Analysis of H7 Subtype Influenza in Large-scale Chicken Farms in One County of Yulin City,Shaanxi Province

作　　者：白艳艳[1] 王利云[1] 薛琳珏 薛久洲 韩斌[1] 刘健鹏[1] 陈裕华 胡明明 Bai Yanyan;Wang Liyun;Xue Linjue;Xue Jiuzhou;Liu Jianpeng;Chen Yuhua;Hu Mingming

机构地区：[1]榆林市动物疫病预防控制中心,陕西榆林719000 [2]榆林市动物卫生监督所,陕西榆林719000 [3]广州市动物卫生监督所,广东广州510440 [4]山西省动物疫病预防控制中心,山西太原030027

出　　处：《中国动物检疫》2018年第11期9-12,共4页China Animal Health Inspection

基　　金：联合国粮农组织-中国兽医现场流行病学培训项目

摘　　要：为了解H7亚型流感在规模鸡场的血清学流行率、分布情况和风险因素,2017年4—5月,以陕西省榆林市某县存栏大于500羽的267个规模鸡场为研究对象,采取两阶段抽样方法,对该县144个规模场开展了血清学检测和问卷调查。结果显示:该县规模鸡场H7亚型流感表观流行率(HPA)为13.89%(95%CI:8.69%～20.63%);阳性区域相对集中,20个血清学阳性场中,有11个分布在2个镇。单因素分析显示:"本场人员到过其他禽场""有外来车辆进入本场"2个因素具有统计学意义。针对上述2个风险因素,建立的多因素回归分析模型的拟合度较好,ROC曲线下面积为0.714(95%CI:0.585～0.843)。结果提示,规模鸡场要严格控制场间的人员流动,外来车辆进入本场时要做好消毒。In order to investigate the prevalence, distribution situation and risk factors of H7 subtype influenza in large-scale chicken farms, during May to June of 2017, 267 farms (raising more than 500 chickens) in one county in Yulin City of Shaanxi Province were taken as the research targets. Adopting two-stage sampling method, serological tests and questionnaire surveys were carried out towards 144 such farms. The results revealed that the apparent prevalence (HPA) of H7 subtype influenza was 13.89%(95%CI:8.69% to 20.63%). Spatial distribution map showed 20 positive farms were mainly concentrated in two towns. According to single factor analysis, two possible risk factors were found, which were "there were people who had been to other poultry farms" and "there were foreign vehicles entering the farm" . Aim at this, a multi-factor regression model was established and its fitting degree was reasonable. The area under the ROC curve was 0.714 (95%CI: 0.585 to 0.843) . Based on the results, it was indicated that personnel movement between different farms should be strictly controlled, and the foreign vehicles should be disinfected when entering the farm.

关 键 词：规模鸡场 H7亚型流感 血清学调查 风险因素 

分 类 号：S851.34[农业科学—预防兽医学]