How to cite (Vancouver). Núñez-Martínez G, Aparicio RC, Villalobos N, Figueroa DA; Bottini LM; José Martínez-Maya J. Prevalence and distribution of transmissible venereal tumor in dogs from a rural community of Mexico. Rev MVZ Cordoba. 2022; 27(3):e2651. https://doi.org/10.21897/rmvz.2651 2022; september-december. 27(3):e2651. https://doi.org/10.21897/rmvz.2651 Journal MVZ Cordoba Original ISSNL: 0122-0268 ©The Author(s) 2021. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons. org/licenses/by-nc-sa/4.0/), lets others remix, tweak, and build upon your work non-commercially, as long as they credit you and license their new creations under the identical terms. Prevalence and distribution of transmissible venereal tumor in dogs from a rural community of Mexico Guadalupe Núñez-Martínez 1 * ; Cecilia Aparicio Roque 1 ; Nelly Villalobos 2 ; Alfredo Figueroa Delgado 3 ; María Bottini Luzardo 1 ; José Juan Martínez-Maya 4 . 1 Universidad Autónoma de Guerrero, Facultad de Medicina Veterinaria y Zootecnia, Cuajinicuilapa, Guerrero, México. 2 Universidad Nacional Autónoma de México. Facultad de Medicina Veterinaria y Zootecnia, Departamento de Patología. México. 3 Universidad Tecnológica del Mar del Estado de Guerrero, México. 4 Universidad Nacional Autónoma de México. Facultad de Medicina Veterinaria y Zootecnia. Departamento de Medicina Preventiva. México. *Correspondencia: mcguadalupenunez@gmail.com Received: April 2022; Accepted: August 2022; Published: September 2022. ABSTRACT Objective. The aim of this work was to determine the rates of prevalence and recurrence of TVT infection in owned dogs, as well as the distribution of the disease, in Cuajinicuilapa, Guerrero, Mexico. Materials and methods. This work was an observational, descriptive, longitudinal study. A TVT diagnosis was performed in all dogs in the community based on clinical records, a physical examination, and a cytological evaluation, and further confirmed by histopathology. Tissue samples were surgically obtained for histopathological analysis and, when required, to remove tumors and give treatment with vincristine; a GPS system was used to identify possible spatial groupings. All cases were re-evaluated one year after. Results. A prevalence of 5.15% was found in 1047 dogs (512 females and 535 males; 25 positive females and 29 positive males). TVT infection was more frequent in 2–3-years-old dogs. A spatial aggregation pattern was observed in the local cases. One year after, no lesions were found in the 29 animals treated. Conclusions. TVT is a common disease, and its distribution suggests its aggregation in certain areas of the locality. Further studies on the dynamics of dog populations in small cities are required. Keywords: Canines; Neoplasia; Transmissible venereal tumor (Source: CAB). RESUMEN Objetivo. Determinar la tasa de prevalencia y recurrencia de infección por TVT en perros con propietario y la distribución de la enfermedad en Cuajinicuilapa, Guerrero, México. Materiales y métodos. Estudio observacional, descriptivo y longitudinal. Se investigó la presencia de TVT en todos los perros de la comunidad con base en la historia clínica, examen físico y evaluación citológica, y el diagnóstico se confirmó por histopatología. Se retiraron quirúrgicamente muestras de tejido para análisis histopatológico y, cuando se requirió, para eliminar los tumores y tratar con vincristina; se identificaron posibles agrupaciones espaciales por GPS. Todos los casos se reevaluaron un año