Serosurvey for Leishmania spp., Toxoplasma gondii, Trypanosoma cruzi and Neospora caninum in neighborhood dogs in Curitiba-Paraná, Brazil

• Published in: Revista brasileira de parasitologia veterinaria 2016-12, Vol.25 (4), p.504-510
• Main Authors: Constantino, Caroline, Pellizzaro, Maysa, Paula, Edson Ferraz Evaristo de, Vieira, Thállitha Samih Wischral Jayme, Brandão, Ana Pérola Drulla, Ferreira, Fernando, Vieira, Rafael Felipe da Costa, Langoni, Helio, Biondo, Alexander Welker
• Format: Article
• Language: English
• Subjects: Animals; Antibodies, Protozoan - blood; Brazil; Community dogs; Disease Reservoirs - parasitology; Dogs - blood; Dogs - parasitology; IFAT; Leishmania - immunology; Leishmania - isolation & purification; Neospora - immunology; Neospora - isolation & purification; neosporosis; PARASITOLOGY; sentinel animals; Seroepidemiologic Studies; Toxoplasma - immunology; Toxoplasma - isolation & purification; toxoplasmosis; Toxoplasmosis, Animal - immunology; Toxoplasmosis, Animal - parasitology; Trypanosoma cruzi - immunology; Trypanosoma cruzi - isolation & purification; urban area; VETERINARY SCIENCES
• ISSN: 0103-846X; 1984-2961; 1984-2961
• DOI: 10.1590/S1984-29612016062

Neighborhood dogs may act as reservoirs for several zoonotic protozoan infections, particularly in urban areas, thus constituting a potential public health threat. Accordingly, the aim of the present study was to evaluate the exposure of neighborhood dogs to four protozoan pathogens in public areas with high levels of human movement in Curitiba, southern Brazil. Blood samples from 26 neighborhood dogs were screened by means of the indirect immunofluorescent antibody test (IFAT) for Leishmania spp., Toxoplasma gondii, Trypanosoma cruzi and Neospora caninum, and a questionnaire was answered by the respective keeper. A total of 8/26 dogs (30.7%) seroreactive to T. gondii, 3/26 (11.5%) to N. caninum and 2/26 (7.7%) to both were identified. All the samples were seronegative for T. cruzi and Leishmania spp. Pathogen seroreactivity was not associated with the daily human movements or other epidemiological variables investigated (p > 0.05). In conclusion, the low seroprevalence for T. gondii and N. caninum indicated low environmental and food risk for animal infection and the seronegativity for Leishmania spp. and T. cruzi may reflect the absence of these pathogens in urban areas of Curitiba. Moreover, neighborhood dogs may be used as environmental sentinels for the presence of protozoan pathogens and their vectors.