Considering the lack of information about livestock diseases on Brazilian oceanic islands, the occurrence of bovine brucellosis was investigated on the island of Fernando de Noronha, state of Pernambuco, Brazil. Serum samples were collected in October 2009, from all the 105 cows raised on the island at that time. These were examined concurrently using the Rose Bengal test and the Complement Fixation Test. All the samples were negative in both tests, indicating that the cows on the island were likely free from infection by smooth forms of Brucella. These results can partly be explained by the prohibition of introduction and importation of both small and large-sized animals that had been implemented through District Decree 19 of February 28, 2004.

A brucelose canina é uma importante zoonose que tem sido investigada freqüentemente em cães como medida sanitária de controle da saúde pública. Foi conduzido um estudo sorológico para investigar a freqüência da brucelose canina por Brucella canis e por Brucella abortus, em 500 cães errantes na cidade de São João da Boa Vista/SP - Brasil, utilizando as técnicas de imunodifusão em gel de ágar (antígeno de parede celular de B. ovis) e imunoaglutinação em placa com antígeno acidificado tamponado. Este estudo mostrou baixa frequência de cães infectados por B. canis 4/500 (0,8%) e ausência de soros positivos para B. abortus. | Dogs brucellosis may cause reprodutive problems and there are a risk factors for human health. The prevalence of brucellosis due to Brucella canis and Brucella abortus was investigated in dogs living in urban areas of São João da Boa Vista/SP - Brasil. For this purpose, 500 blood sample were collected and serum analysed by agar gel immunodiffusion test and Rose-Bengal test. The frequency of brucellosis due to B. canis was 4/500 (0,8%) and negative for B. abortus.