human brucellosis: seroprevalence and risk factors related to high risk occupational groups in tanga municipality, tanzania.the objective of this study was to describe the prevalence of brucellosis in various occupations in tanga, tanzania. during the year 2004, serum samples were collected from volunteers in various occupations and screened for brucella antibodies using rose bengal plate agglutination test. information on occupation, kind of work and contacts with livestock was collected and age and sex were recorded. the overall sero prevalence of antibodies to brucella abortus was 5.52%. one variable in a multivar ...200918811674
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