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Prevalence and risk factors associated with Chlamydophila abortus infection in dairy herds in Jordan

机译：约旦奶牛群中与流产衣原体感染有关的患病率和危险因素

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A cross-sectional study was carried out to determine seroprevalence and to identify risk factors associated with Chlamydophila abortus infection in 62 nonvaccinated dairy herds (671 cows) in Jordan between January and June 2007. Information regarding herd management was recorded through a personal interview with farmers. Antibodies against C. abortus were detected using an ELISA test kit. Chi-square analysis and multivariable logistic regression model were used to identify risk factors associated with C. abortus seropositivity. The true prevalence of antibodies against C. abortus in individual cows and cattle herds were 19.9% and 66.3%, respectively. Univariable Chi-square analysis revealed three variables with P<=0.25 that were further offered to multivariable logistic regression analysis. Small-sized herds were identified as a risk factor for seropositivity to C. abortus, while sweeping followed by water hosing and using disinfectants were identified as protective factors. Cows in the age groups of >8 and <=10 years old and >2 and <=6 years old had the highest and lowest significant seroprevalence to C. abortus, respectively. Results of this study indicated that C. abortus is highly prevalent in Jordan's dairy herds and Chlamydophila infection could be controlled by applying strict biosecurity measures in the dairy farms.Digital Object Identifier http://dx.doi.org/10.1007/s11250-012-0146-9
机译：在2007年1月至6月间，进行了一项横断面研究，以确定血清阳性率，并确定与约旦的62例未接种疫苗的奶牛群（671头奶牛）的流产衣原体流产相关的危险因素。有关牛群管理的信息是通过与农民的个人访谈记录的。使用ELISA测试试剂盒检测抗流产梭状芽胞杆菌的抗体。卡方检验和多变量logistic回归模型用于确定与流产梭状芽孢杆菌血清阳性相关的危险因素。单个牛和牛群中抗流产梭状芽胞杆菌的抗体的真实发生率分别为19.9％和66.3％。单变量卡方分析揭示了三个P <= 0.25的变量，这些变量进一步提供给多变量logistic回归分析。小型畜群被确定为流产梭状芽孢杆菌血清阳性的危险因素，而清扫，随后浇水和使用消毒剂被确定为保护因素。 > 8岁和<= 10岁，> 2岁和<= 6岁年龄组的母牛分别对流产梭状芽胞杆菌的血清阳性率最高和最低。这项研究的结果表明流产梭状芽胞杆菌在约旦的奶牛群中非常普遍，可以通过在奶牛场采取严​​格的生物安全措施来控制衣原体的感染.Digital Object Identifier http://dx.doi.org/10.1007/s11250-012 -0146-9

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