Effect of enhanced biosecurity and selected on-farm factors on Campylobacter colonization of chicken broilers

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Abstract

123 000 c.f.u./g in pooled caecal samples). We analysed data from 2314 poultry batches sampled at slaughter in the UK in 2011-2013. We employed random-effects logistic regression to account for clustering of batches within farms and adjust for confounding. We estimated population attributable fractions using adjusted risk ratios. Enhanced biosecurity reduced the odds of colonization at partial depopulation [odds ratio (OR) 0 25, 95% confidence interval (CI) 0 14-0 47] and, to a lesser extent, at final depopulation (OR 0 47, 95% CI 0 25-0 89). An effect of the type of breed was also found. Under our assumptions, approximately 1/3 of highly colonized batches would be avoided if they were all raised under enhanced biosecurity or without partial depopulation. The results of the study indicate that on-farm measures can play an important role in reducing colonization of broiler chickens with Campylobacter spp. and as a result human exposure.

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Georgiev, M., Beauvais, W., & Guitian, J. (2017). Effect of enhanced biosecurity and selected on-farm factors on Campylobacter colonization of chicken broilers. Epidemiology and Infection, 145(3), 553–567. https://doi.org/10.1017/S095026881600251X

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