Public Health Rep. 1976 Nov-Dec;91(6):526-32.
Serum samples obtained from two groups within the College of Veterinary Medicine, Iowa State University, were examined for Toxoplasma gondii antibodies. Serum samples from 65 (26.0%) of the 250 persons examined yielded a titer of 1:16 or greater by the indirect fluorescent antibody test. A prevalence of 33.3% was obtained for 108 Veterinary Medical Research Institute (VMRI) personnel. Fof 142 veterinary students, the reactive rate was 20.4%. There was a marked difference of results within the student group--the reactive rate of 31.0% of 58 members of the class of 1975 was significantly higher (p less than 0.05) than the 13.1% for 84 members of the class of 1976. Studies on multiple serum samples were carried out on 55 VMRI personnel; 17 showed a change in serologic reactivity but only 5 had titers of 1:64 or greater. No definitive relationships could be determined between the epidemiologic characteristics examined and the presence of T. gondii antibodies. Characteristics examined included age, sex, primary residency, food habits (eating of rare beef and smoked pork products), and extent of animal contact.
对爱荷华州立大学兽医学院两个组的血清样本进行了弓形虫抗体检测。在接受检测的250人中，65人（26.0%）的血清样本通过间接荧光抗体试验得出的滴度为1:16或更高。兽医医学研究所（VMRI）的108名工作人员的患病率为33.3%。142名兽医学生的反应率为20.4%。学生组内结果存在显著差异——1975级58名成员的反应率为31.0%，显著高于1976级84名成员的13.1%（p<0.05）。对55名VMRI工作人员的多个血清样本进行了研究；17人血清学反应性有变化，但只有5人的滴度为1:64或更高。在所检查的流行病学特征与弓形虫抗体的存在之间无法确定明确的关系。所检查的特征包括年龄、性别、主要居住地、饮食习惯（食用生牛肉和烟熏猪肉制品）以及动物接触程度。
