2012年新疆蓝舌病血清学调查及区间分布

Serological survey and analysis of bluetongue in Xingjian area in 2012

为了解2012年新疆地区蓝舌病（BT）流行现状，本研究采用免疫凝胶扩散实验对采自新疆8个地（州市）8个县市的2142份牛羊血清进行BT血清学调查。检测结果表明：调查地区的羊普遍存在BTV感染，感染率存在区间差异；羊血清感染率在0．51％～3．33％之间，平均阳性率为1．32％；牛血清中未检测出阳性。通过对2012年新疆BT流行区域分布与气候等自然因素之间的相关性分析发现：新疆BT感染率与地理位置有一定的相关性，就全疆而言，南疆蓝舌病血清学阳性率高于北疆，BTv感染率与年平均气温显著相关，与年平均降雨量有负相关性，由此可见，地理位置和气候对BT流行病学影响较大。

To investigate the epidemic status of bluetongue in Xinjiang area, serosurvey of bluetongue virus （BTV） was conducted by agar gel immunodiffusion test on 2142 sera collected from 8 districts of Xinjiang area. The result in- dicated that BTV infection was widespread in Xinjiang area but varied between geographic regions. The seropre lence of BTV infection in sheep were 0.51% -3.33 %, with an average of 1.32 % .There was significant correlation between seroprevalence of BTV and geographic setting and ambient temperature, however seroprevalence of BTV infection was not significantly related to the rainfall.