Institute of Zoology, Bahauddin Zakariya University, Multan, Pakistan.
Department of Dermatology, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan.
Vector Borne Zoonotic Dis. 2023 Oct;23(10):495-506. doi: 10.1089/vbz.2023.0017. Epub 2023 Aug 1.
is an intra-erythrocytic gram negative rickettsial bacterium that infects small ruminants, resulting in huge economic losses worldwide. The present investigation aims at reporting the molecular prevalence of in 1200 asymptomatic goats that were enrolled from 4 districts (Layyah, Lohdran, Dera Ghazi Khan, and Rajanpur) in Punjab, Pakistan by targeting the gene of bacterium. Risk factors associated with the prevalence of and phylogeny of bacterium were also documented. 184 out of 1200 (15%) goat blood samples were infected with . The prevalence of the pathogen varied with the sampling sites ( = 0.005), and the highest prevalence was detected in goats from Layyah (19%) followed by Rajanpur (17%), Dera Ghazi Khan (15%), and Lohdran district (9%). The represented partial gene amplicon was confirmed by Sanger sequencing and deposited to GenBank (OP225957-59). Phylogenetic analysis revealed that the amplified isolates resembled the sequences reported from Iran, Mangolia, Sudan, and the United States. Sex and age of goats, herd composition and size, and the presence of ticks on goats and dogs associated with herds were the rick factors associated with the prevalence of . Red blood cells, lymphocytes (%), neutrophils (%), hemoglobin, and hematocrit levels in blood and Aspartate amino transferase, urea, and creatinine levels in serum were disturbed in infected goats when compared with uninfected animals. We are reporting the prevalence of in Pakistani goats from four districts of Punjab and these data will help in developing the integrated control policies against this tick-borne pathogen that is infecting our goat breeds.
绵羊无形体病是一种感染小反刍动物的红细胞内革兰氏阴性立克次体,在全球范围内造成了巨大的经济损失。本研究旨在报告通过针对细菌的基因,在来自巴基斯坦旁遮普省 4 个地区(拉扬、洛德拉恩、德拉加齐汗和拉詹普尔)的 1200 只无症状山羊中检测到绵羊无形体的分子流行率。还记录了与该病原体流行率相关的风险因素和细菌的系统发育。在 1200 份山羊血液样本中,有 184 份(15%)感染了绵羊无形体。病原体的流行率因采样地点而异(=0.005),拉扬的山羊中检测到的流行率最高(19%),其次是拉詹普尔(17%)、德拉加齐汗(15%)和洛德拉恩区(9%)。代表部分的扩增基因片段通过 Sanger 测序得到确认,并保存在 GenBank(OP225957-59)中。系统发育分析显示,扩增的分离株与从伊朗、蒙古、苏丹和美国报告的序列相似。与流行率相关的风险因素包括山羊的性别和年龄、畜群组成和规模,以及畜群中羊和狗身上的蜱虫。感染绵羊无形体的山羊的红细胞、淋巴细胞(%)、中性粒细胞(%)、血红蛋白和血细胞比容水平以及血清中的天门冬氨酸氨基转移酶、尿素和肌酐水平与未感染动物相比均受到干扰。我们报告了来自旁遮普省四个地区的巴基斯坦山羊中绵羊无形体的流行率,这些数据将有助于制定针对这种感染我们山羊品种的蜱传病原体的综合控制政策。