2013年河南省猪伪狂犬野毒感染血清学调查

摘要

伪狂犬病是一种严重威胁养猪业的重要传染病，2012年以来该病在河南省大面积流行，对养猪业造成了巨大影响。本研究利用gE-ELISA方法，对2013年来自河南省不同区域不同规模347个猪场的13275份血清样本进行检测分析。结果显示血清样本阳性率31.3%，猪场阳性率83.6%。种猪群带毒率高，育肥阶段伪狂犬病毒感染情况尤其严重。但一些生产管理较好的规模化猪场通过采取强化免疫，不断补入阴性后备种猪，加强生物安全等综合措施，成功防控了伪狂犬疫情。本研究对于了解当前河南省伪狂犬疫情，制订正确的防控策略提供了依据。%Pseudorabies is a devastating infectious disease affecting pig industry. Since 2012, the disease has spread to a large area in Henan province and caused significant losses. To perform a serological survey, 13 275 serum samples were collected in 2013 from 347 pig farms in different regions of Henan and detected for pseudorabies virus (PRV) antibodies using gE-ELISA. The positive rates were 31.3%for serum samples and 83.6%for pig farms. The PRV infection was particularly severe in breeding herds and finishing pigs. On the other hand, PRV infection was under control in some large pig farms because of good management, regular vaccination and introduction of negative gilts. This survey could provide some basis for understanding the current infection status of PRV on pig farms and taking control protocols in Henan province.