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Evaluation of the performance of the modified direct agglutination test (MAT) for detection of Toxoplasma gondii antibodies in dogs

Avaliação da performance do teste de aglutinação modifica (MAT) para a detecção de anticorpos anti-Toxoplasma gondii em cães

Toxoplasmosis is a zoonosis that has been the subject of study in Brazil and worldwide. The dogs are sentinels for the infection and can carry Toxoplasma gondii in the environment. Seroepidemiological surveys of these animals are an important tool in the surveillance and control of the disease and inform decision-making in health programs. In this study the performance of the Modified Agglutination Test (MAT) in the serodiagnosis of canine toxoplasmosis is evaluated and compared to the indirect immunofluorescent-antibody test (IFAT). A sample of 157 dog sera from the county of Monte Negro, Rondônia, with 76.40% positive reactions for Toxoplasma gondii (IFAT =16) was analyzed using the MAT (=25), presenting sensitivity of 85.00% (Confidence Interval 95.00%: 79.4 - 90.60%) and specificity of 100.00%.

Toxoplasma gondii; Dog; Agglutination tests; Sensitivity and specificity


Faculdade de Medicina Veterinária e Zootecnia / Universidade de São Paulo Av. Prof. Dr. Orlando Marques de Paiva, 87, Cidade Universitária Armando de Salles Oliveira, 05508-270 São Paulo SP Brazil, Tel.: +55 11 3091-7636, Fax: +55 11 3031-3074 / 3091-7672 / 3091-7678 - São Paulo - SP - Brazil
E-mail: brazvet@edu.usp.br