First report of Leishmania tropica in domestic and wild animal hosts in hyperendemic areas of human cutaneous leishmaniasis in western Yemen: a neglected tropical disease needing One Health approach

Manal Ali Al-Ashwal, Abdulelah H. Al-Adhroey, Wahib M. Atroosh, Assia Abdullah Al-Subbary, Adel Ahmed Albhri, Ummi Wahidah Azlan, Jia Hui Tan, Arwa Ahmed Alkhali, Sheikh Abdulhafed Alshoteri, Hany Sady, Talal H. Alharazi, Yee Ling Lau, Hesham M. Al-Mekhlafi

Research output: Contribution to journalArticleScientificpeer-review

Abstract

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.

Original languageEnglish
Article number256
Number of pages10
JournalPARASITOLOGY RESEARCH
Volume123
Issue number6
DOIs
Publication statusPublished - 27 Jun 2024
Publication typeA1 Journal article-refereed

Keywords

  • Leishmania tropica
  • Cutaneous leishmaniasis
  • Domestic animal
  • Infectious diseases
  • Reservoir hosts
  • Wild animal
  • Yemen

Publication forum classification

  • Publication forum level 1

ASJC Scopus subject areas

  • Parasitology
  • General Veterinary
  • Insect Science
  • Infectious Diseases

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