【摘要】 目的调查中国西北河西走廊地区的猪、牛、羊和鸡等肉用动物的弓形虫血清阳性率。方法采用间接血凝的检测方法,共调查了1 112份血清样本,包括428头猪、275头牛、130只羊和279只鸡。结果共检测到弓形虫阳性血清样本134份(12.1%,95%CI,10.1-14.0)。其中,猪弓形虫血清阳性率(22.7%,95%CI,18.7-26.6)显著高于牛(5.1%,95%CI,2.5-7.7)、羊(6.2%,95%CI,2.0-10.3)和鸡(5.4%,95%CI,27-8.0)(P<0.05)。凉州地区的猪弓形虫血清阳性率高于其他地区,且差异有统计学意义(P<0.05)。笼养鸡的弓形虫血清阳性率明显低于放养鸡分别为3.2%和9.8%(P<0.05)。结论河西走廊地区的肉用动物的弓形虫感染率较高,增加了当地人和其他动物感染弓形虫的风险。更多还原

【Abstract】 The obligate intracellular Toxoplasma gondii can infect humans through ingestion of raw or undercooked meat containing tissue cysts.The objectives of the present study were to determine the T.gondii seroprevalence in pigs,cattle,sheep and chickens in Liangzhou,Tianzhu,Minqin and Gulang counties in Hexi Corridor,northwest China.The 1 112 serum samples including 428 pigs,275cattle,130 sheep and 279 chickens were assayed for T.gondii antibodies by an indirect hemagglutination test(IHAT).A total of 134 serum samples(12.1%,95% confidence interval,10.1-14.0)were seropositive with T.gondii.The seroprevalence in pigs(22.7%,95% CI,18.7-26.6)was significantly higher(P<0.05)than that in cattle(5.1%,95% CI,2.5-7.7),sheep(6.2%,95% CI,2.0-10.3)and chickens(5.4%,95% CI,27-8.0).Animals from Liangzhou were at a higher risk of infection as compared to all other regions,of which,the difference in pigs was statistically significant(P<0.05).The prevalence in caged chickens and free-range chickens were 3.2% and 9.8% respectively,and the difference was statistically significant(P<0.05).This survey revealed the T.gondii seroprevalence in pigs,cattle,sheep and chickens in Hexi Corridor,which indicated the potential risk of these animals as a source of T.gondii infection in humans and other animals in this region.更多还原