伊朗锡斯坦和俾路支斯坦地区单峰骆驼(Camelus dromedarius)钩端螺旋体感染的血清型分型和危险因素:一项探索性研究,包括全球骆驼钩端螺旋体感染的最新情况

Roxana Sarabandi , Ali Sarani , Mehdi Rasekh , Soheil Sadr , Gholamreza Abdollahpour , Shakiba Nazemian , Mahdis Khajehmohammadi , Hassan Borji
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引用次数: 0

摘要

目的钩端螺旋体病是一种重要的骆驼人畜共患疾病,给世界范围内的畜牧业造成经济负担。因此,本研究调查了伊朗锡斯坦和俾路支斯坦省骆驼钩端螺旋体感染的血清型和危险因素,并与世界范围内骆驼钩端螺旋体感染的发病率和流行率进行了比较。方法于2022年秋冬至2023年春,在伊朗东南部锡斯坦省和俾路支斯坦省采集骆驼血清150份。然后将样品送到德黑兰大学钩端螺旋体研究实验室进行显微凝集试验。将结果与世界上其他骆驼钩端螺旋体感染研究的血清阳性率和流行病学进行比较,以确定这些人畜共患病在伊朗的意义。结果2 %(3/150)血清呈钩端螺旋体感染阳性,4 %(6/150)血清呈可疑,滴度为1:100。此外,在三个阳性样本中,两个在显微镜凝集试验中表现出对Pomona血清型的反应性,而另一个阳性样本在显微镜凝集试验中表现出对黄疸出血热血清型的反应性。根据骆驼的性别或年龄,没有观察到感染流行率的显著差异。骆驼钩端螺旋体感染的全球流行病学研究表明,该疾病在不同地区的感染率和病原体差异很大。结论钩端螺旋体感染仍然是伊朗家畜健康管理的一个重大威胁。为了控制骆驼的钩端螺旋体感染,需要进行系统监测和更全面的研究,以确定影响其传播的环境和管理因素。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Serovar typing and risk factors of Leptospira infection in dromedary camels (Camelus dromedarius) of Sistan and Baluchestan, Iran: An exploratory study, with a worldwide update of Leptospira infections in camels

Objectives

Leptospirosis is a significant zoonotic disease of camels that poses an economic burden on livestock industries worldwide. Hence, the present study investigated the serovars and risk factors of Leptospira infection in camels in the Sistan and Baluchestan province, Iran, and compared it with the incidence and prevalence of Leptospira infection in camels worldwide.

Methods

A total of 150 serum samples were collected from the camel population of Sistan and Baluchestan provinces, southeast of Iran, from the fall and winter of 2022 to the spring of 2023. The samples were then sent to the Leptospira Research Laboratory at the University of Tehran for the microscopic agglutination test. Results were compared against Leptospira infection seroprevalence and epidemiology from other worldwide studies on Leptospira infection in camels to ascertain the significance of these zoonoses in Iran.

Results

According to the results, 2 % of serum samples (3/150) were positive for Leptospira infections, and 4 % (6/150) were suspicious, with <1:100 titers. Moreover, of the three positive samples, two demonstrated reactivity to serovar Pomona, whereas the other positive sample demonstrated reactivity with serovar Icterohaemorrhagiae in the microscopic agglutination test. No significant difference in the prevalence of infection based on sex or age of camels was observed. The worldwide epidemiologic study of Leptospira infection in camels shows that the disease varies significantly in different regions regarding infection rates and pathogens.

Conclusions

The results of this study indicate that Leptospira infection continues to be a significant threat to livestock health management in Iran. To control Leptospira infection in camels, there is a need for systematic monitoring and more comprehensive research to identify environmental and management factors that affect its spread.
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