Seroprevalence of brucellosis among dairy farm workers in Mexico

• Main Authors: Miguel E Cervera-Hernández (Author), Anabel Ordaz-Vázquez (Author), Pedro Torres-González (Author), Bárbara Chávez-Mazari (Author), Orbelin Soberanis-Ramos (Author), José Sifuentes-Osornio (Author), Alfredo Ponce de León (Author), Miriam Bobadilla-del Valle (Author)
• Format: Book
• Published: Instituto Nacional de Salud Pública, 2016-05-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Summary

Objective. To describe the seroprevalence and associated factors for brucellosis among dairy farm workers. Materials and methods. We performed a secondary analysis of a data set and sera from a previous cross-sectional study in a dairy farm. Sera were tested for Brucella spp. antibodies by the slide agglutination test. Seropositivity was defined as a titer ≥1:40; recent infection was titers ≥1:160. Results. We tested 331 human sera. Seroprevalence of brucellosis was 18.1% (60/331; 95% CI 14.1-22.7); 13.3% of them (8/60; 95% CI 5.9 - 24.5) corresponded to recent infection. Highexposure occupation (calf caretaker; OR 3.3; 95%CI 1.1 - 9.7), daily hours in contact with cows (OR 1.1; 95%CI 1.03 - 1.2), and living on-site (OR 2.2; 95% CI 1.1 - 4.4) remained inde- pendently associated with seropositivity. Conclusions. We found a high seroprevalence of brucellosis among dairy farm workers, as well as a significant association among those with prolonged and close contact with cattle.

Item Description

0036-3634
1606-7916
10.21149/spm.v58i3.7896