title: Prevalence and risk factors for brucellosis in goats in areas of Mexico with and without brucellosis control campaign.
abstract: Brucellosis is a major constraint for small-scale goat farming systems in Mexico. This study estimated the prevalence of testing positive to brucellosis and identified and quantified risk factors in goats from small-scale farms of Michoacán that had participated in a brucellosis campaign (i.e. vaccination, serological testing, culling and awareness) and of Jalisco that had negligible brucellosis campaign participation. A cross-sectional serological survey was conducted among 1,713 goats of 83 flocks. The prevalence of testing positive to brucellosis was higher (38%) in Jalisco than in Michoacán (11%). Logistic regression analysis indicated that goats from Michoacán had lower odds to test positive for brucellosis (odds ratio (OR) = 0.32, 95% confidence interval (CI) 0.21-0.48) compared to goats from Jalisco. Goats in zero-grazing systems had lower odds than goats in grazing systems (OR = 0.22, 95% CI 0.09-0.57). When goats were kept in pens with low density (0.002 to 0.22 goat/m(2)), odds was lower (OR = 0.44, 95% CI 0.28-0.67) compared to goats kept in pens with higher density (0.23 to 1 goat/m(2)). Odds was higher for testing positive when farmers bought goats from goat traders (OR = 1.82, 95% CI 1.15-2.87) compared to farmers who did not. If scavenger poultry had access to goat pens, the odds was half (OR = 0.52, 95% CI 0.33-0.83) of those where poultry had no access. Regular disinfection of the pen reduced the odds (OR = 0.66, 95% CI 0.44-0.99) compared to where disinfection was not regular. The brucellosis control campaign was effective in reducing brucellosis seropositivity.
authors: Quantitative Veterinary Epidemiology Group, Wageningen University, PO Box 338, 6700AH, Wageningen, The Netherlands. oseguera.david@gmail.com
authors: David
authors: D
authors: Oseguera Montiel
authors: Klaas
authors: K
authors: Frankena
authors: Henk
authors: H
authors: Udo
authors: Nícola Maria
authors: NM
authors: Keilbach Baer
authors: Akke
authors: A
authors: van der Zijpp
mesh_terms: D000822:Animal Husbandry / Q000379:methods*; D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood; D002002:Brucella / Q000302:isolation & purification*; D002006:Brucellosis / Q000453:epidemiology / Q000382:microbiology / Q000517:prevention & control / Q000662:veterinary*; D003430:Cross-Sectional Studies; D005260:Female; D015511:Goat Diseases / Q000453:epidemiology* / Q000382:microbiology / Q000517:prevention & control; D006041:Goats; D016015:Logistic Models; D008297:Male; D008800:Mexico / Q000453:epidemiology; D015995:Prevalence; D012307:Risk Factors; D012395:Rose Bengal; D012621:Seasons
chemical_list: D000907:Antibodies, Bacterial; D012395:Rose Bengal