2021年河南省O型口蹄疫免疫效果评估
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S851.3

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Evaluation on the Immune Effects of FMD-O Vaccine in Henan Province in 2021
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    摘要:

    为了解河南省O型口蹄疫(FMD)的免疫抗体水平,评估其免疫效果,2021年在河南省规模场、屠宰场与散养户,随机采集785场次22 879份血清样品,采用ELISA方法检测O型FMD免疫抗体,并对检测结果进行不同畜种、不同场点类型、不同季节、不同行政区域的统计分析。结果显示:2021年全省O型FMD抗体免疫合格率为80.30%,其中猪、牛、羊抗体免疫合格率分别为79.09%、92.48%、72.26%。猪场中,种猪场、商品代场、屠宰场O型FMD抗体免疫合格率分别为85.24%、82.57%、65.56%;牛场中,种牛场、商品代场、屠宰场、散养户O型FMD抗体免疫合格率分别为96.72%、91.75%、94.17%、100%;羊场中,种羊场、商品代场、散养户O型FMD抗体免疫合格率分别为78.63%、72.37%、69.46%。春、夏、秋、冬季的O型FMD抗体免疫合格率分别为79.42%、79.00%、80.58%、86.12%。18个地市中,有2个地市O型FMD抗体免疫合格率低于70%。结果表明:河南省O型口蹄疫整体免疫效果较好,但羊场免疫效果相对较差,尤其是散养户,免疫抗体合格率未达到70%,存在疫情发生风险。结果提示,需重点加强羊饲养场尤其是散养户的O型FMD免疫工作。

    Abstract:

    In order to identify the immune status of foot-and-mouth disease subtype O(FMD-O)in Henan Province and to evaluate its immune effects,22 879 serum samples were randomly collected from 785 premises/times in intensive farms,slaughter houses and free-range households in 2021 to detect antibody against FMDV by ELISA,then the test results were analyzed based on animal species,types of premises,different seasons and administrative regions. The results showed that the immunization rate of FMD-O was 80.30% across the province,specifically,79.09%,92.48% and 72.26% respectively in pigs,cattle and sheep;for swine farms,85.24%,82.57% and 65.56% respectively in breeding farms,commercial farms and slaughter houses;for cattle farms,96.72%,91.75%,94.17% and 100% respectively in breeding farms,commercial farms,slaughter houses and free-range households;for sheep farms,78.63%,72.37% and 69.46% respectively in breeding farms,commercial farms and free-range households;79.42%,79.00%,80.58% and 86.12% respectively in spring,summer,autumn and winter;and below 70% in two of 18 cities. In conclusion,the immune status of FMD-O was generally well in Henan Province,and the immunization rate exceeded the national standard(70%),but poor in sheep farms,especially free-range households(<70%)where a risk of disease occurrence was available. Therefore,it was necessary to strengthen immunization against FMD-O in sheep farms especially free-range households.

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张利平,谢彩华,朱前磊,郭育培,程果,闫若潜.2021年河南省O型口蹄疫免疫效果评估[J].《中国动物检疫》编辑部,2022,39(7):7-10.

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