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© 1996 Oxford University Press

research-article

Seroprevalence of Brucellosis among High Risk People in Northern Jordan

MAHMOUD N ABO-SHEHADA*, JUMANA S ODEH**, MAHMOUD ABU-ESSUD** and NIZAR ABUHARFEIL{dagger}

* Faculty of Veterinary Medicine, Jordan University of Science & Technology PO Box 3030, Irbid, Jordan.
**Department of Biology, Yarmouk University Irbid, Jordan.
{dagger}Department of Biology, Jordan University of Science & Technology PO Box 3030. Irbid, Jordan.

BACKGROUND: Brucellosis is considered the most important zoonosis in Jordan with high prevalence among man and livestock.

METHODS: This study was carried out on high risk people in 1992 in order to assess the seroprevalence of brucellosis in northern Jordan. The sera of 1236 individuals (636 at high risk and 600 controls) were evaluated using the Rose Bengal plate agglutination test (RBPT) and enzyme-linked immunosorbent assay (ELISA-lgQ) tests.

RESULTS: A significantly (p < 0.05) higher seroprevalence of brucellosis among high risk people (8.2%) compared to the control sample (0.5%) was found. The overall seroprevalence was significantly higher among sheep farmers and meat handlers than in other occupations tested. The seroprevalence increased with age and years at work, but was not influenced by sex or locality. The results indicated a higher seroprevalence among veterinarians in northern Jordan, compared to central Jordan but the difference was not significant. Seroprevalence was present only among veterinanans working in clinics especially in the working age group (34–43 years).

CONCLUSIONS: The results of this study emphasized the importance of contact infections, namely contact with infected animals and their products, as a method of transmission of brucellosis compared to ingestion of contaminated animal products.

Keywords Brucellosis, veterinarians, food handlers, animal handlers, epidemiology, zoonosis, Jordan

Revised 1 June 1995


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