In 2009, the epidemiological situation of bovine tuberculosis was studied in the state of Mato Grosso, which is a traditional beef exporter. The state was divided into four regions. In each region, properties were selected randomly. A predetermined random number of animals were chosen from these properties, and comparative cervical tuberculin tests were conducted. In total, 28,878 animals from 1,133 properties underwent examination. The animals with inconclusive results were reexamined with the same diagnostic procedure in a minimal interval of 60 days. In each sampled property, a questionnaire-based survey was conducted to identify possible risk factors for the disease. In the state, the prevalence of infected herds and animals was 1. 24% [0.06; 0.90] in the breeding region, respectively. It was observed that the condition of the herds infected with bovine tuberculosis was associated with milk production, European or mestizo breeds, degree of sophistication in the production mode, and herd size of up to 486 animals. Therefore, the implementation of a monitoring system for detection and elimination of the residual infected herds along with incorporation of risk-based monitoring elements is the best strategy for the state. Key words: Brazil. Bovine tuberculosis. Mato Grosso. Prevalence. Risk factors.
ResumoEm 2009, a situação epidemiológica da tuberculose bovina foi estudada no Estado de Mato Grosso, tradicional exportador de carne. O Estado foi estratificado em quatro regiões. Em cada região, propriedades foram sorteadas aleatoriamente e, dentro dessas, escolheu-se de forma também aleatória um número pré-estabelecido de animais, os quais foram submetidos ao teste tuberculínico Cervical [0,06; 0,90] na região cria. Verificou-se que a condição do foco de tuberculose bovina está associada à produção de leite, com raças europeias ou mestiças, com algum grau de sofisticação no modo de produção e em rebanhos com até 486 animais. Assim, a implementação de um sistema de vigilância para detecção e saneamento dos focos residuais constitui a melhor estratégia para o Estado. Palavras-chave: Brasil. Fatores de risco. Mato Grosso. Prevalência. Tuberculose bovina.