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Home / Publications / Leishmania taxonomy

Leishmania taxonomy

  • Authors: Mauricio IL
  • Publication Year: 2018
  • Journal: The Leishmaniases: Old Neglected Tropical Diseases
  • Link: https://link.springer.com/chapter/10.1007%2F978-3-319-72386-0_2

The genus Leishmania includes a large number of species, with at least 39 species described in the literature, which reflects this group’s capacity to parasitize a wide range of vertebrate hosts and sand flies, but, in particular, to produce a wide range of clinical presentations in humans. Taxonomy within the genus Leishmania is still not fully established, with ongoing debates about species definitions and, therefore, number of species, as well as about subgenera. Recent molecular data and phylogenetic analyses support simplification of Leishmania taxonomy to fewer species. These consensus species would be L. donovani, L. major, L. tropica and L. mexicana within the subgenus L. (Leishmania) and L. braziliensis and L. guyanensis within L. (Viannia). Reptilian parasites, formerly in a separate genus, now belong to the third and only other current subgenus, L. (Sauroleishmania). Other groups remain controversial and unnamed, such as the parasites initially placed under the genus Endotrypanum and species related to L. enrietti. New species continue to be discovered or named, particularly in previously poorly known or represented groups. Better taxonomies rely on the quality of the markers used, ideally the entire genome, as well as sufficient numbers of samples that are representative of each species diversity as well as across the entire genus. A consensus on Leishmania taxonomy should be agreed upon and adhered to in publications to avoid confusion particularly among clinicians, as well as researchers.

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About GHTM

GHTM is a R&D Unit that brings together researchers with a track record in Tropical Medicine and International & Global Health. It aims at strengthening Portugal's role as a leading partner in the development and implementation of a global health research agenda. Our evidence-based interventions contribute to the promotion of equity in health and to improve the health of populations.

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