Send to

Choose Destination
Pan Afr Med J. 2013 Nov 17;16:103. doi: 10.11604/pamj.2013.16.103.2143. eCollection 2013.

Human brucellosis: seroprevalence and associated exposure factors among abattoir workers in Abuja, Nigeria - 2011.

Author information

Nigeria Field Epidemiology and Laboratory Training Programme (NFELTP), Abuja, Nigeria.
Department of Veterinary Public Health and Preventive Medicine, Ahmadu Bello University, Zaria, Nigeria.
Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, Onderstepoort 0110, South Africa and National Veterinary Research Institute, Vom, Nigeria.
Department of Community Medicine, Ahmadu Bello University, Zaria, Nigeria.
Global Public Health Solutions, Atlanta, USA.



Brucellosis, a neglected debilitating zoonosis, is a recognized occupational hazard with a high prevalence in developing countries. Transmission to humans can occur through contact with infected animals or animal products. Brucellosis presents with fever. In Nigeria, there is a possibility of missed diagnoses by physicians leading to a long debilitating illness. We conducted a study to determine the seroprevalence and factors associated with Human Brucellosis (HB) among abattoir-workers in Abuja, Nigeria.


We conducted a cross-sectional study and selected abattoir-workers using stratified random sampling. Structured questionnaires were used to collect data on demographics and exposure-factors. We tested the workers' serum-samples using Rose-Bengal (RBPT) and ELISA tests. A worker with HB was one whose serum tested positive to RBPT or ELISA. We tested differences in proportions between workers with HB and those without HB using odds-ratio and X(2) tests.


Of 224 workers, 172 (76.8%) were male and mean age was 30 + 9.0 years. Of 224 sera collected, 54 were positive giving a seroprevalence of 24.1%. Of these, 32 (59.3%) were butchers, and 11 (20.4%) were meat-sellers. Slaughtering animals while having open-wounds (Odds-ratio (OR) = 2.15, 95% Confidence Interval (CI) = 1.15-4.04); occupational-exposure of >5years (OR = 2.30, CI = 1.11-4.78) and eating raw meat (OR = 2.75, CI = 1.21-6.26) were significantly associated with HB. Multivariate analyses showed that occupational-exposure of >5years (Adjusted OR (AOR) =2.45, CI = 1.15 - 5.30) and eating raw-meat (AOR = 2.64, CI = 1.14 - 6.14) remained significantly associated with HB.


Seroprevalence of HB among abattoir-workers in Abuja was high. Factors associated with HB were occupational-exposure of >5years and eating raw-meat. Abattoir-workers should be discouraged from eating raw-meat and educated on adherence to safe animal-product handling practices.


Brucellosis; Nigeria; abattoir; exposure factors; occupational hazard; seroprevalence

[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Pan African Medical Journal Icon for PubMed Central
Loading ...
Support Center