重庆地区猪弓形虫病的血清学调查与分析

Serological investigation and analysis of swine toxoplasmosis in Chongqing

为掌握重庆地区猪弓形虫的感染情况及流行趋势,于2011年5月份、8月份和11月份分别采集重庆39个区(县)的猪血清样本3 510份,采用酶联免疫吸附试验检测了血清中的弓形虫抗体。结果显示,受检的3 510份猪血清样本中,阳性样本2 522份,弓形虫感染阳性率为71.85%。按不同猪来源统计,散养户的阳性率为75.46%,规模猪场的阳性率为69.96%,屠宰场生猪的阳性率为67.79%,种猪场种母猪的阳性率为73.59%;按采样季节统计,猪弓形虫抗体阳性率5月份为71.58%,8月份为81.28%,11月份为69.97%。根据调查结果判断,重庆地区各区(县)和各种来源的猪均有较高程度的弓形虫感染,夏季的感染率明显高于冬季和春季,差异显著(P<0.05)或极显著(P<0.01)。

The objective of this investigation was to learn the epidemic situation of swine Toxoplasma gondii infection in Chongqing.A total of 3 510 serum samples were collected respectively from 39 suburbs in May,August and November in 2011 and tested on T.gondii antibody by ELISA.The results showed that 2 522 swine sera were positive,and the positive rate was 71.85%,in which the positive rate was 75.46% in scattered swine,69.96% in scaled farm,67.79% in abattoir,73.59% in breeding swine;71.58% in May,81.28% in August,and 69.97% in November.The survey indicated that swine in Chongqing had high T.gondii infection rate.The positive rate was significant（P0.05） or very significant（P0.01） higher in summer than those in winter and spring.