Prevalence of brucellosis and risk factors associated with its transmission to slaughterhouse employees in the Cuiaba metropolitan area in the state of Mato Grosso
Carlos Schneider, RuiDiniz Santos, MarceloLunardi, MicheleHelena Benetti, AnaManoel Camargo, LázaroHenrique Freitas, SilvioLopes Negreiro, RísiaSampaio Costa, Deiler
The aim of this study was to investigate the prevalence of Brucella abortus infection in employees of two slaughterhouses (A and B) in the metropolitan area of Cuiabá in the state of Mato Grosso and the risk factors associated with its transmission. We collected 134 blood samples from workers in all sections of the slaughterhouses to evaluate brucellosis, and we administered a questionnaire to obtain information about potential risk factors associated with its transmission. We also collected blood from 468 cows before slaughter on the same day of the blood collection from the slaughterhouse workers to determine bovine seropositivity. Six (4.5%) out of the 134 workers examined were positive for B. abortus infection, and all worked as slaughterers. We found a significant association between the prevalence of brucellosis and slaughterers compared to other occupations at the slaughterhouse. It is noteworthy that four seropositive workers had worked as a slaughterer in other establishments, they did not use personal protective equipment (PPE) and they had consumed dairy products without heat treatment. In assessing the prevalence of brucellosis in slaughtered animals in both slaughterhouses, there was a higher number of seropositive cows at slaughterhouse B than slaughterhouse A: of the 468 cows tested in both slaughterhouses, 35 (7.5%) were positive for B. abortus infection, as det
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