Abstract
Studies have suggested that flies play a linking role in the epidemiology of Campylobacter spp. in broiler chickens and that fly screens can reduce the prevalence of Campylobacter spp. We examined the year-round and long-term effects of fly screens in 10 broiler chicken houses (99 flocks) in Denmark. Prevalence of Campylobacter spp.–positive flocks was significantly reduced, from 41.4% during 2003–2005 (before fly screens) to 10.3% in 2006–2009 (with fly screens). In fly screen houses, Campylobacter spp. prevalence did not peak during the summer. Nationally, prevalence of Campylobacter spp.–positive flocks in Denmark could have been reduced by an estimated 77% during summer had fly screens been part of biosecurity practices. These results imply that fly screens might help reduce prevalence of campylobacteriosis among humans, which is closely linked to Campylobacter spp. prevalence among broiler chicken flocks.
Highlights
Studies have suggested that flies play a linking role in the epidemiology of Campylobacter spp. in broiler chickens and that fly screens can reduce the prevalence of Campylobacter spp
Prevalence during Summer Campylobacter spp. prevalence among flocks from fly screen houses decreased significantly from 41.4% in 2003– 2005 to 10.3% in 2006–2009 (p
Before the fly screen intervention (2003–2005), Campylobacter spp. prevalence did not differ between the fly screen houses and the control houses (p = 0.920) or from the national prevalence for the same period (p = 0.188) (Figure 1; Table)
Summary
Studies have suggested that flies play a linking role in the epidemiology of Campylobacter spp. in broiler chickens and that fly screens can reduce the prevalence of Campylobacter spp. Prevalence of Campylobacter spp.–positive flocks in Denmark could have been reduced by an estimated 77% during summer had fly screens been part of biosecurity practices. These results imply that fly screens might help reduce prevalence of campylobacteriosis among humans, which is closely linked to Campylobacter spp. prevalence among broiler chicken flocks. The incidence of campylobacteriosis cases among humans has been shown to correlate with the prevalence of Campylobacter spp. among broiler chickens [4]. Studies have shown that different fly species can harbor up to 100 species of pathogenic microorganisms
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