Abstract
After a national control program, data on Campylobacter prevalence in the broiler supply chain in the Netherlands were gathered for 3 sampling points: departure of broiler farm and arrival and departure of the slaughterhouse. Monitoring data from this control program for 2002 to 2005 were analyzed to find correlations and possible trends in the data. As expected, the greatest correlations were found between adjacent sampling points. A high correlation was expected between number of animals slaughtered and Campylobacter prevalence, because it is assumed that larger companies will have greater hygiene standards due to better implication of food safety regulations. However, statistical analysis showed that there was no clear correlation between company size and Campylobacter prevalence. Data analysis further identified an increasing trend in Campylobacter prevalence at departure of slaughterhouse from 2002 to 2005 with strong seasonality at all 3 sampling points. Measures to control Campylobacter, therefore, need to be reconsidered and possibly intensified to achieve a reduction in Campylobacter positives.
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