National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan; Department of Animal Medicine, Faculty of Veterinary Medicine, Sohag University, 82524 Sohag, Egypt.
National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan.
Parasitol Int. 2022 Oct;90:102618. doi: 10.1016/j.parint.2022.102618. Epub 2022 Jun 28.
The one-humped camel (Camelus dromedarius) or dromedary is an economically important domestic animal. However, infectious diseases, including those caused by vector-borne hemopathogens, frequently compromise the health and production of camels. In this study, we examined infections caused by Babesia, Theileria, Trypanosoma, and Anaplasma species in camels in Egypt. We analyzed blood DNA samples from 148 camels reared in six Egyptian governorates (Giza, Asyut, Sohag, Qena, Luxor, and the Red Sea) using pathogen-specific Polymerase Chain Reaction (PCR) assays. Our results indicated that 29 (19.6%), 22 (14.9%), 1 (0.7%), 2 (1.4%), 1 (0.7%), 2 (1.4%), and 28 (18.9%) of the surveyed animals were infected with Babesia bovis, B. bigemina, Babesia sp. Mymensingh, Theileria sp. Yokoyama, Theileria equi, Trypanosoma evansi, and Anaplasma marginale, respectively. We found that a total of 68 (45.9%) animals were infected with at least one of the detected hemopathogens. Sequencing analyses of PCR amplicons confirmed our diagnostic results. This study is the first to report Theileria sp. Yokoyama and Babesia sp. Mymensingh in Egypt. This is also the first report of infection with these two species in one-humped camel. In conclusion, this study found that camels in Egypt are infected with several vector-borne hemopathogens, including novel parasite species.
单峰驼（Camelus dromedarius）或单峰骆驼是一种经济上重要的家畜。然而，传染病，包括由媒介传播的血液病原体引起的传染病，经常会损害骆驼的健康和生产。在这项研究中，我们检查了埃及骆驼感染巴贝斯虫、泰勒虫、锥虫和无形体的情况。我们使用病原体特异性聚合酶链反应（PCR）检测分析了来自埃及六个省（吉萨、阿斯尤特、索哈格、盖纳、卢克索和红海）的 148 头骆驼的血液 DNA 样本。我们的结果表明，29（19.6%）、22（14.9%）、1（0.7%）、2（1.4%）、1（0.7%）、2（1.4%）和 28（18.9%）受检动物分别感染了牛巴贝斯虫、双芽巴贝斯虫、孟买巴贝斯虫、约氏泰勒虫、马媾疫锥虫、伊氏锥虫和边缘无形体。我们发现，共有 68（45.9%）只动物至少感染了一种检测到的血液病原体。PCR 扩增子的测序分析证实了我们的诊断结果。本研究首次在埃及报道了约氏泰勒虫和孟买巴贝斯虫。这也是首次在单峰驼中报告这两种新寄生虫的感染。总之，本研究发现埃及骆驼感染了几种媒介传播的血液病原体，包括新的寄生虫种类。
