Molecular Profiling of Ticks and Associated Pathogens: First Report of Rickettsia sibirica, Rickettsia slovaca, and Babesia microti in Ticks From Pakistan
文献类型: 外文期刊
作者: Muhammad Kashif Obaid;Jin Luo;Shuaiyang Zhao;Zhancheng Tian;Shakir Ullah;Jehan Zeb;Guangyuan Liu;Jianxun Luo;Hong Yin;Muhammad Rashid;Qiaoyun Ren;Guiquan Guan
作者机构:
关键词: Babesia microti;public health;Rickettsia sibirica;Rickettsia slovaca;zoonotic infection
期刊名称: Transboundary and Emerging Diseases
ISSN: 1865-1674
年卷期: 2025 年 2025 卷 1 期
页码:
收录情况: SCIE(2025版)
摘要: Global distribution of ticks and their associated tick-borne pathogens (TBPs) presents substantial health concerns for both humans and animals. The present study aimed to investigate the distribution, morpho-molecular identification, and associated TBPs of diverse tick species collected from Khyber Pakhtunkhwa and Punjab provinces of Pakistan. Morphological identifed ticks were molecularly confirmed via cytochrome oxidase I (COI) and 16S rRNA genes, which showed 15 different tick species. Among them, we found the highest prevalence rate of Rhipicephalus (Rh) microplus (404/1803; 22.41%), while the lowest prevalent tick species were Haemaphysalis (Hae) montgomeryi (44/1803; 2.44%). Similarly, the highest tick load was found on cattle (544/186; 2.92), while least was found on goats (272/164; 1.66). Various TBPs, including Rickettsia (R) spp. (via gltA, sca4, ompA, ompB genes), Anaplasma (A) sp. (via 16S rRNA gene), Coxiella burnetii (via IS1111 gene), Piroplasm and Hepatozoon (H) spp. (via 18S rRNA gene) were screened. The Rh. microplus tick species showed highest positivity rate (11.63%) for various TBPs, whereas Hae. sulcata ticks were recorded as TBPs free in current study. Among the detected TBPs, Coxiella burnetii was most prevalent (1.72%), followed by A. phagocytophilum & R. slovaca (1.44% each), R. sibirica (0.78%), R. raoultii (0.61%), H. canis (0.55%), R. conorii subsp. raoultii (0.50%), Hepatozoon sp., (0.44%), Theileria (Th) uilenbergi (0.39%), Babesia (B) microti (0.33%), and Th. luwenshuni (0.28%). This study provides the first report of TBPs, including R. slovaca, R. sibirica, and B. microti, in ticks from Pakistan. Phylogenetic analysis was performed based on the aforementioned genetic markers, in which ticks and their associated TBPs formed distinct clades with their corresponding isolates. This research work provides a deep insight regarding the characterization of different ticks and their associated TBPs in Pakistan and, significantly, it presents evidence of potential zoonotic threats to both animal and public health due to these newly detected pathogens.
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