Al-Majali Ahmad M, Al-Qudah Khaled M, Al-Tarazi Yasser H, Al-Rawashdeh Odea F
Department of Veterinary Clinical Sciences, Faculty of Veterinary Medicine, Jordan University of Science and Technology, P. O. Box 3030, Irbid 22110, Jordan.
Trop Anim Health Prod. 2008 Apr;40(3):193-200. doi: 10.1007/s11250-007-9080-7.
During the period between February, 2004 and December, 2006, a cross-sectional study was performed to investigate some epidemiological aspects related to camel brucellosis in Jordan. Four hundred twelve camel sera from 37 herds were randomly collected and analyzed using Rose Bengal plate test and complement fixation test. A structured pre-tested questionnaire was administered to collect information on camel herd health and management. A multivariable logistic regression model was constructed to investigate risk factors associated with seropositivity to Brucella antigens. Moreover, the incidence of Brucella-specific abortion was investigated in 7 camel herds located in different locations in Southern Jordan. The true prevalence of Brucella-seropositive in camels was 12.1%. Thirteen (35.1%) herds had at least one positive camel. The seroprevalence ofbrucellosis in camels was significantly higher in the southern part of Jordan than that in central or northern Jordan. The multivariable logistic regression model on both individual and herd levels revealed large herds and contact with small ruminants as risk factors for Brucella seropositivity. On the other hand, using disinfectants was identified as a protective factor (OR = 0.8; 95% CI: 0.1, 0.9) only on the camel herd level. The incidence of Brucella-caused abortion was 1.9%. Brucella melitensis biotype 3 was isolated from 4 aborted camel fetuses.
在2004年2月至2006年12月期间，开展了一项横断面研究，以调查约旦骆驼布鲁氏菌病的一些流行病学情况。从37个畜群中随机采集了412份骆驼血清，并采用玫瑰红平板试验和补体结合试验进行分析。发放了一份经过预测试的结构化问卷，以收集有关骆驼畜群健康和管理的信息。构建了一个多变量逻辑回归模型，以调查与布鲁氏菌抗原血清阳性相关的风险因素。此外，还对约旦南部不同地点的7个骆驼畜群中布鲁氏菌特异性流产的发生率进行了调查。骆驼中布鲁氏菌血清阳性的实际患病率为12.1%。13个（35.1%）畜群中至少有一头骆驼呈阳性。约旦南部骆驼布鲁氏菌病的血清阳性率显著高于约旦中部或北部。个体和畜群层面的多变量逻辑回归模型均显示，大畜群以及与小反刍动物接触是布鲁氏菌血清阳性的风险因素。另一方面，仅在骆驼畜群层面，使用消毒剂被确定为一个保护因素（比值比=0.8；95%置信区间：0.1，0.9）。布鲁氏菌引起的流产发生率为1.9%。从4头流产的骆驼胎儿中分离出了马尔他布鲁氏菌生物3型。
