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An outbreak of oriental theileriosis in dairy cattle imported to Vietnam from Australia

机译：从澳大利亚进口到越南的乳制力东方牛的爆发

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This study reports an outbreak of oriental theileriosis in dairy cattle imported to Vietnam from Australia. Following clinical and pathological diagnoses, a total of 112 cattle blood samples were divided into three groups and tested using multiplexed tandem PCR. Group 1 were from aborted heifers in Vietnam; group 2 were from cattle before shipment from group 1 cattle and group 3 were from the same batch of cattle but transported to Taiwan. Theileria orientalis DNA was detected in 72.3% cattle. The prevalences of T. orientalis in groups 1, 2 and 3 were 77.6, 86.9 and 57.5%, respectively, and the difference in prevalence was significant between groups 1 and 3 (P < 0.0001). The infection intensities of genotypes chitose and ikeda of T. orientalis were higher in groups 1 (57 721 and 33 709, respectively) and 3 (5897 and 61 766, respectively) than those in group 2 (2071 and 6331, respectively). Phylogenetic analyses of the major piroplasm surface protein sequences revealed that genotypes chitose and ikeda determined herein were closely related to those previously reported from Australia. This first report of an outbreak of oriental theileriosis in imported cattle emphasizes improved measures for the export and import of cattle infected with T. orientalis.
机译：本研究报告了从澳大利亚进口到越南的乳制力牛的东方特主子爆发。在临床和病理诊断之后，将112个牛血液样品分为三组，并使用多路复用串联PCR测试。第1组来自越南中产阶级的小母牛;第2组来自牛，在第1组牛和第3组出货，来自同一批牛但运送到台湾。在72.3％的牛中检测到Theileria Orientalis DNA。第1,2和3组中的T. Orientalis的患病分别为77.6,86.9和57.5％，患病率差异在1和3组之间显着（P <0.0001）。 T. Orientalis的基因型Chitose和Ikeda的感染强度在第1组（分别为第2组（分别为第27和6331族）和3（分别为5897和61766）的3（5897和61766）。主要粒子表面蛋白序列的系统发育分析表明，本文确定的基因型偶氮和IKEDA与先前从澳大利亚报告的那些密切相关。这次进口牛东方异界爆发的第一个报告强调了对感染T. Orientalis的牛出口和进口的改进措施。

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