2021年云南省玉溪市小反刍兽疫专项监测评估
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S851.3

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Special Monitoring and Evaluation on PPR in Yuxi City of Yunnan Province in 2021
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    摘要:

    为全面掌握云南省玉溪市小反刍兽疫(PPR)的病原分布和羊群免疫效果,根据2021年玉溪市PPR专项监测方案,在全市开展PPR监测和流行病学调查。采用多阶段调查的方法,从全市9个县区采集免疫羊血清样品1 631份、眼鼻棉拭子样品6 438份,分别使用阻断ELISA和实时荧光RT-PCR检测方法,进行PPR免疫抗体检测和病毒核酸检测。结果显示:2021年玉溪市PPR群体免疫合格率为82.98%,个体免疫合格率为83.62%,未检测到病原学阳性样品;不同养殖区域、不同性别的免疫抗体合格率均有统计学差异(P<0.05),而不同养殖类型、不同企业疫苗的免疫抗体合格率差异均不显著(P>0.05)。结果表明:玉溪市羊PPR整体免疫效果较好,所用PPR疫苗免疫原性较好,免疫程序合理,但部分县区的免疫合格率较低,因此应继续加强PPR的强制免疫及补免工作;在未引入新疫源的前提下,疫情发生风险较低,但应加大羊只引种检疫和调运监管力度。本次监测评估了玉溪市的PPR总体防控状况,为尽快实现消灭PPR的目标提供了数据支撑。

    Abstract:

    In order to investigate the distribution of pathogen of peste des petits ruminants(PPR)and immune effect in sheep in Yuxi City of Yunnan Province,targeted monitoring and epidemiological investigation were carried out across the city according to the special monitoring plan for PPR published in the city in 2021. A total of 1 631 serum samples and 6 438 eye or nose swabs were collected from immunized sheep in 9 counties/districts in the city by using multi-stage investigation to respectively detect immune antibodies against PPR and virus nucleic acid by blocking ELISA and real-time fluorescent RT-PCR. The results showed that the qualified rates of population and individual animal were 82.98% and 83.62%,respectively,and no positive samples were detected;the qualified rates of immune antibodies in different breeding regions or different genders were of significant statistical difference(P<0.01),but slightly in different breeding types and vaccines produced by different enterprises(P>0.05). In conclusion,the overall immunization effect against PPR was good in the city,with good immunogenicity of PPR vaccines as well as reasonable immunization procedure,but the qualified rate of immunity was lower in some counties/districts,which should continue to implement compulsory or supplementary immunization against PPR;and sheep to be introduced should be strictly quarantined and supervised during transportation,although the risk of outbreak was lower in the context of absence of any infection source. The general status of prevention and control of PPR in the city was monitored and evaluated in the paper,from which a reference was provided for reaching the goal of eliminating PPR soonest.

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杨秋楠,罗晓燕,宋诗雅,李晶,徐聪,杨耀兰,李锡慧,张文东,赵焕云,吕嵘.2021年云南省玉溪市小反刍兽疫专项监测评估[J].《中国动物检疫》编辑部,2022,39(6):14-18.

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  • 在线发布日期: 2022-06-06
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