Ismail Zuhair B, Abutarbush Sameeh M, Al-Majali Ahmad M, Gharaibeh Mohammad H, Al-Khateeb Batoul
Department of Veterinary Clinical Sciences, Faculty of Veterinary Medicine, Jordan University of Science and Technology, Irbid, Jordan.
Department of Basic Veterinary Sciences, Faculty of Veterinary Medicine, Jordan University of Science and Technology, Irbid, Jordan.
J Infect Dev Ctries. 2019 Jun 30;13(6):473-479. doi: 10.3855/jidc.11146.
This study was carried out to determine the seroprevalence and risk factors associated with Leptospira serovars Pomona and Hardjo infection in dairy cows.
Seroprevalence was determined using ELISA using 160 healthy and 80 recently aborted cows. Risk factor assessment was carried out using a pre-validated questionnaire.
The true farm seroprevalence of Leptospira serovars Pomona and Hardjo was 92.3% (95% CI: 66%-98%). In healthy cows, the true and apparent cow seroprevalence of Leptospira serovars Pomona and Hardjo were 26.9 (95% CI: 20-34%), 26.25% (95% CI: 20-33%) and 28.75% (95% CI: 22-36%) and 27.5% (95% CI: 21-35%), respectively. Semi-intensive management system (OR = 11.43; P < 0.01), surface water as a source of drinking water (OR = 1.21; P < 0.03), lack of special wear for visitors (OR = 1.39; P < 0.05), and previous history of abortion (OR = 1.02; P < 0.05) were associated with high rate of seropositivity against Leptospira serovars Pomona and Hardjo. In recently aborted cows, the true and apparent seroprevalence rates of Leptospira serovars Pomona and Hardjo were 53.25% (95% CI: 47.5-62%), 53.75% (95% CI: 48.5-63.2%) and 56% (95% CI: 49-61%), 56.25% (95% CI: 49.8-61.2%), respectively.
Leptospirosis is an endemic disease in Jordan and further studies are required to effectively control the disease in dairy cows.
本研究旨在确定奶牛中波摩那型和哈焦型钩端螺旋体血清型感染的血清流行率及相关危险因素。
采用酶联免疫吸附测定法（ELISA）对160头健康奶牛和80头近期流产奶牛进行血清流行率测定。使用预先验证的问卷进行危险因素评估。
波摩那型和哈焦型钩端螺旋体血清型在养殖场的实际血清流行率为92.3%（95%置信区间：66%-98%）。在健康奶牛中，波摩那型和哈焦型钩端螺旋体血清型的实际和表观奶牛血清流行率分别为26.9%（95%置信区间：20%-34%）、26.25%（95%置信区间：20%-33%）以及28.75%（95%置信区间：22%-36%）和27.5%（95%置信区间：21%-35%）。半集约化养殖系统（比值比=11.43；P<0.01）、以地表水作为饮用水源（比值比=1.21；P<0.03）、访客缺乏特殊防护装备（比值比=1.39；P<0.05）以及既往流产史（比值比=1.02；P<0.05）与波摩那型和哈焦型钩端螺旋体血清型的高血清阳性率相关。在近期流产奶牛中，波摩那型和哈焦型钩端螺旋体血清型的实际和表观血清流行率分别为53.25%（95%置信区间：47.5%-62%）、53.75%（95%置信区间：48.5%-63.2%）以及56%（95%置信区间：49%-61%）、56.25%（95%置信区间：49.8%-61.2%）。
钩端螺旋体病在约旦是一种地方病，需要进一步研究以有效控制奶牛中的该病。
