| epidemiological aspects of an infection by brucella abortus in risk occupational groups in the microregion of araguaína, tocantins. | the aim of this paper was to study some epidemiological aspects of the infection by brucella abortus in risk occupational groups in the microregion of araguaína, tocantins. for antibody research, 645 serum samples were analyzed by the complement fixation test (cf). a 4.0% frequency was found (26/645) in patients' serum and among those 4.1% (23/551) were slaughterhouses employees and 8.1% (3/37) rural workers. of the total positive samples, three (2.0%) were women and 23 (4.7%) men; ten (2.9%) we ... | 2008 | 18641850 |