Department of Parasitology, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
Department of Community Medicine, Faculty of Medicine, Thamar University, Dhamar, Yemen.
Parasitol Res. 2024 Jun 27;123(6):256. doi: 10.1007/s00436-024-08273-3.
Cutaneous leishmaniasis (CL), a neglected tropical disease, is a major public health concern in Yemen, with Leishmania tropica identified as the main causative agent. This study aims to investigate the occurrence and distribution of Leishmania parasites in domestic and wild animals in CL endemic areas in the western highlands of Yemen. A cross-sectional study was conducted in the Utmah District of western Yemen. Blood and skin scraping specimens were collected from 122 domestic and wild animals and tested for the Leishmania DNA using internal transcribed spacer 1 (ITS1) nested polymerase chain reaction. Phylogenetic analyses were performed on 20 L. tropica sequences obtained from animals in this study and 34 sequences from human isolates (collected concurrently from the same study area) retrieved from the GenBank. Overall, L. tropica was detected in 16.4% (20/122) of the examined animals, including 11 goats, two dogs, two bulls, one cow, one donkey, one rabbit, one rat and one bat. None of the examined cats and sheep was positive. The animal sequences were segregated into four different L. tropica haplotypes, with the majority of the animal (15/20) and human (32/34) sequences composed of one dominant haplotype/genotype. These findings represent the first confirmed evidence of natural L. tropica infections in different kinds of domestic and wild animals in western Yemen, suggesting these animals potentially have a role in the transmission of CL in Yemen. Therefore, a One Health approach is required for the effective prevention and control of this devastating disease among endemic populations.
皮肤利什曼病(CL)是一种被忽视的热带病,在也门是一个主要的公共卫生关注点,利什曼原虫被确定为主要病原体。本研究旨在调查也门西部高地 CL 流行地区的家养和野生动物中利什曼寄生虫的发生和分布。在也门西部的乌特马赫区进行了一项横断面研究。从 122 只家养和野生动物采集血液和皮肤刮片标本,使用内部转录间隔区 1(ITS1)巢式聚合酶链反应检测利什曼原虫 DNA。对从本研究动物中获得的 20 个 L. tropica 序列和从 GenBank 中检索到的 34 个人类分离株(从同一研究地区同时采集)进行了系统发育分析。总体而言,在所检查的 122 只动物中,有 16.4%(20/122)检测到 L. tropica,包括 11 只山羊、2 只狗、2 只公牛、1 只奶牛、1 只驴、1 只兔子、1 只老鼠和 1 只蝙蝠。检查的猫和羊均未呈阳性。动物序列分为四个不同的 L. tropica 单倍型,其中大部分动物(15/20)和人类(32/34)序列由一个主要单倍型/基因型组成。这些发现代表了在也门西部不同种类的家养和野生动物中首次确认的自然 L. tropica 感染的证据,表明这些动物可能在也门 CL 的传播中发挥作用。因此,需要采取一种“同一健康”方法来有效预防和控制该疾病在流行人群中的流行。
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