2018-2019年山东省小反刍兽疫专项流行病学调查

Special Epidemiological Investigation on Peste des Petits Ruminants in Shandong Province during 2018 to 2019

为全面掌握山东省小反刍兽疫的病原分布和免疫效果,按照《山东省动物疫病监测与流行病学调查实施方案》,分别于2018年和2019年,通过问卷调查结合实验室检测,在全省开展了小反刍兽疫专项流行病学调查。结果显示:2018-2019年山东省小反刍兽疫免疫抗体合格率均在80%以上,达到了国家和省级的要求,抗体水平平稳(χ^2=0.003,P=0.95632,P>0.05);病原学检测均未发现阳性样品。问卷统计结果显示:疫病方面,目前养羊场以细菌性疾病感染为主,没有发现小反刍兽疫疫情;饲养场(户)基本能够做到调入羊只的隔离、检疫,以及养殖场的定期消毒。结果表明,山东省羊群的小反刍兽疫免疫保护水平较高,防控措施执行较为到位,防控形势比较理想。今后需持续开展小反刍兽疫专项流行病学调查,从而为今后小反刍兽疫免疫政策的制定和强制免疫退出提供数据支撑。

In order to fully make clear the distribution of pathogens of peste des petits ruminants(PPR)and relevant immune effect in Shandong Province,a special epidemiological investigation on PPR was carried out across the province by combination of questionnaires and laboratory tests in 2018 and 2019 respectively according to Shandong Provincial Plan for Implementing Animal Disease Surveillance and Epidemiological Investigation.The results showed that the qualification rates of antibodies against PPR were both more than 80%in the two years,which reached the national and provincial standards with stable level of antibody(χ^2=0.003,P=0.95632,P>0.05);and no any positive samples were detected.Based on the results of questionnaire statistics,it was shown that no PPR case was found in sheep farms where were mainly infected with bacterial diseases;all introduced sheep could be isolated and quarantined in farms(households)where were regularly disinfected.In short,the level of antibodies against PPR was high in sheep in Shandong Province due to effective implementation of prevention and control measures.However,the special epidemiological investigation should be continued,so as to support the development of immunization policies and the withdrawal of compulsory immunization in the future.