Molecular Detection of Leishmania (Leishmania) mexicana in Sandflies from the State of Yucatan, Mexico

Luis Gilberto Pérez-Blas, Ángela G. Chiyean-Acosta, Elsy Beatriz Canché-Pool, Raúl Tello-Martín, Jimmy Raymundo Torres-Castro, Hugo Antonio Ruiz-Piña, Raúl Flores-Mejía, Octavio Rodríguez Cortés, Enrique Reyes-Novelo

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Background: Leishmaniases are a group of vector-borne zoonotic diseases of public health relevance within the tropical and subtropical regions of the world. The state of Yucatan is a vulnerable and receptive area to localized cutaneous leishmaniasis (LCL) due to its proximity to the high-transmission endemic states of Campeche and Quintana Roo. Autochthonous cases of LCL caused by Leishmania (Leishmania) mexicana have been documented in the state, showing a geographical expansion of the disease. Materials and Methods: Using CO2-supplemented Centers for Disease Control and Prevention light traps and Shannon traps, we captured anthropophilic sandflies in the surroundings of a locality with recent records of autochthonous cases of LCL. Sandflies carrying Leishmania DNA were evidenced using PCR. Results: A total of 140 Phlebotominae (Diptera: Psychodidae) females of four species were captured: Lutzomyia (Tricholateralis) cruciata (Coquillett), Psathyromyia (Psathyromyia) shannoni (Dyar), Lutzomyia (Lutzomyia) longipalpis (Lutz and Neiva), and Dampfomyia (Coromyia) deleoni (Fairchild and Hertig). Molecular results showed that 6.1% (95% confidence interval [CI] = 2.3-12.9%) of Lu. cruciata and 43.8% (95% CI = 19.8-70.1%) of Pa. shannoni showed evidence of carrying L. (L.) mexicana DNA. Conclusion: We provide evidence of anthropophilic sandflies carrying L. mexicana DNA in a municipality with recorded autochthonous cases of LCL caused by this parasite species in the state of Yucatan, suggesting the emergence of new focus of LCL in Mexico.

Original languageEnglish
Pages (from-to)589-595
Number of pages7
JournalVector-Borne and Zoonotic Diseases
Volume22
Issue number12
DOIs
StatePublished - Dec 2022

Keywords

  • Phlebotominae
  • Psychodidae
  • foci
  • leishmaniasis
  • vector
  • zoonosis

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