Abstract

ARAGON-LOPEZ, Carlos et al. Molecular detection of Ehrlichia canis, Anaplasma platys and Rickettsia rickettsii in domestic canines from the municipality of Cajeme, Sonora, Mexico. Abanico vet [online]. 2021, vol.11, e129.  Epub Apr 04, 2022. ISSN 2448-6132.  https://doi.org/10.21929/abavet2021.45.

Zoonoses are a worldwide problem with an impact on animal health. This group of diseases include Ehrlichiosis, Anaplasmosis and Rickettsiosis, in which their vector is the tick Riphicephalus sanguineus, commonly known as the brown dog tick. Current evidence indicates this microorganism acts as vector of bacterial zoonotic agents including Ehrlichia canis, Anaplasma platys and Rickettsia rickettsii, which have infected a large number of dogs and humans in northern Mexico. This study was conducted in the municipality of Cajeme, Sonora, using blood samples (n=170) from canine. Molecular techniques were used to detect 92 samples positive for Ehrlichia spp., 47 for Ehrlichia canis, 18 for Anaplasma platys and 2 for Rickettsia spp. In addition, co-infection with Ehrlichia canis was found in 12 samples positive for Anaplasma platys. Sequencing of one positive of each bacterium was performed, obtaining 100% homology in the "GenBank" platform (NCBI). Our results emphasized the importance of the zoonotic impact and co-infection of these diseases. Moreover, this is the first study confirming the molecular identification of the species Ehrlichia canis, Anaplasma platys and Rickettsia rickettsii, as well as their co-infection, in domestic dogs located in the municipality of Cajeme, Sonora.

Keywords : zoonoses; Ehrlichiosis vectors; co-infection; molecular techniques.

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