一起疑似羊捻转血矛线虫感染的紧急流行病学调查
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An Emergency Epidemiological Investigation on a Suspected Case of Haemonchus contortus Infection in Sheep
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    摘要:

    2016年8月16日,新疆温泉县某乡镇报告发生羊不明原因死亡,疑似感染捻转血矛线虫。为确定病因,控制疫情,减少损失,防止类似事件再次发生,新疆维吾尔自治区动物疾病预防控制中心组织相关人员,采用现场访谈、实地调查、问卷调查、临床剖检等方式,开展了紧急流行病学调查。调查发现:温泉县牧区是捻转血矛线虫的老疫区,在数十年前曾暴发过放牧羊群大面积感染捻转血矛线虫而大量死亡的情况;2016年7—8月中旬以来连续的阴雨天气及合适的气温为捻转血矛线虫的大量繁殖创造了良好的外部环境,是造成此次羊捻转血矛线虫感染的外部因素;在水草丰盛且较为固定的草场放牧,未及时开展流行病学调查,未及时准确找到病因并进行针对性防控,也是导致此次羊捻转血矛线虫病暴发和传播的原因。依据调查结果,提出了科学放牧、合理用药、对羊粪便深埋处理等防治捻转血矛线虫病的建议。

    Abstract:

    On August 16,2016,it was reported that some sheep died of unknown reasons in a township in Wenquan County of Xinjiang,which was suspected to be an outbreak of Haemonchus contortus infection. In order to find out relevant causes,control any spreading,reduce any loss and avoid recurrence of any such cases,relevant staff was organized by Xinjiang Uygur Autonomous Region Center for Animal Disease Prevention and Control to conduct an emergency epidemiological investigation by means of on-site interview,field investigation,questionnaire investigation and clinical autopsy. It was investigated that the pastoral area in the county was a historically infected zone with Haemonchus contortus,where a large number of grazing sheep died due to wide infection with the disease decades ago. A favorable external environment for large amount of Haemonchus contortus reproduction was provided by continuous cloudy and rainy weather under appropriate temperature since July to Mid August 2016,which was the external factor for such outbreak,while grazing on the same grassland with abundant water and grass,failure to timely carry out epidemiological investigation and to accurately find out the causes for targeted prevention and control also contributed to the occurrence and spreading of the outbreak. According to the above results,it was recommended to prevent and control the disease through scientific grazing,rational administration and deeply-buried processing of sheep feces.

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张斐,王强,续文渊,韩宝颖,林汉亮,范冰洁.一起疑似羊捻转血矛线虫感染的紧急流行病学调查[J].《中国动物检疫》编辑部,2022,39(5):18-22.

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  • 在线发布日期: 2022-05-07
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