Blackmore D K, Schollum L M
N Z Med J. 1982 Sep 22;95(716):649-52.
The sera of 460 people associated with farming were examined for evidence of leptospiral agglutinins. Of these, 308 were dairy farm workers, 62 percent of whom were from the Waikato. Forty-four percent of dairy farm workers, 8 percent of sheep and beef farmers and 25 percent of pig farmers ware seropositive. Of the 137 seropositive dairy farm workers, 65 percent had titres to serovar hardjo and 53 percent to pomona. There were no significant differences between the serological prevalences of workers in different geographical regions. Analysis of factors significantly associated with seropositive workers included; being male, a previous history of medically confirmed leptospirosis in the worker, a clinical history of leptospirosis in the cattle, the size of the milking herd, the type of milking shed, and vaccination of the herd against leptospirosis. These findings indicate that the incidence of leptospirosis in dairy farm workers can only be effectively controlled by reducing the prevalence of infection in dairy cattle.
对460名从事农业相关工作的人员的血清进行检测，以寻找钩端螺旋体凝集素的证据。其中，308人是奶牛场工人，其中62%来自怀卡托地区。44%的奶牛场工人、8%的养羊和养牛农民以及25%的养猪农民血清呈阳性。在137名血清呈阳性的奶牛场工人中，65%对hardjo血清型有抗体效价，53%对波摩那血清型有抗体效价。不同地理区域工人的血清学患病率之间没有显著差异。与血清呈阳性工人显著相关的因素分析包括：男性、工人既往有医学确诊的钩端螺旋体病病史、牛有钩端螺旋体病的临床病史、挤奶牛群的规模、挤奶棚的类型以及牛群是否接种钩端螺旋体病疫苗。这些发现表明，只有通过降低奶牛感染率，才能有效控制奶牛场工人钩端螺旋体病的发病率。
