Abdallah Mirza Omar, Niu Qingli, Yang Jifei, Hassan Muhammad Adeel, Yu Peifa, Guan Guiquan, Chen Ze, Liu Guangyuan, Luo Jianxun, Yin Hong
State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Science, Xujiaping 1, Lanzhou, Gansu, 730046, P. R. China. Correspondence should be sent to Hong Yin at:
J Parasitol. 2017 Jun;103(3):221-227. doi: 10.1645/16-161. Epub 2017 Mar 13.
Piroplasmosis, a disease of domestic and wild animals, is caused by tick-borne protozoa in the genera of Theileria and Babesia. There is limited information available about the prevalence of piroplasmosis in ticks in China, and to assess the potential threat of piroplasmosis in China, we investigated the infections of ovine and bovine Babesia and Theileria species in ticks collected from cattle, yaks, sheep, horses, and camels in several regions of China where tick-borne diseases have been reported. In total, 652 ticks were collected from the animals in 6 provinces of China. Babesia spp. and Theileria spp. were detected with a PCR-RLB method and identified by sequencing. Overall, 157 ticks (24.1%) were infected with 5 Babesia and 4 Theileria species. Among tested tick samples, 134 (20.6%) were single infections with 1 of 7 piroplasm species, with Theileria annulata (118/652, 18.1%) being dominant. Only 23 (3.5%) tick samples were double or triple infected, Theileria luwenshuni and Theileria sinensis (18/652, 2.8%) were frequently observed in co-infections. Some piroplasm species were carried by ticks that were not previously reported to be vectors.
梨形虫病是一种家畜和野生动物疾病，由蜱传播的泰勒属和巴贝斯属原生动物引起。关于中国蜱中梨形虫病的流行情况，目前可获取的信息有限。为评估梨形虫病在中国的潜在威胁，我们调查了从中国几个报告有蜱传疾病的地区的牛、牦牛、绵羊、马和骆驼身上采集的蜱中绵羊和牛巴贝斯属及泰勒属物种的感染情况。总共从中国6个省份的动物身上采集了652只蜱。采用PCR-RLB方法检测巴贝斯属和泰勒属物种，并通过测序进行鉴定。总体而言，157只蜱（24.1%）感染了5种巴贝斯属和4种泰勒属物种。在检测的蜱样本中，134只（20.6%）为7种梨形虫物种之一的单一感染，其中环形泰勒虫（118/652，18.1%）占主导。仅23只（3.5%）蜱样本为双重或三重感染，共感染中常观察到吕氏泰勒虫和中华泰勒虫（18/652，2.8%）。一些梨形虫物种由以前未被报告为传播媒介的蜱携带。
