Journal
SPATIAL AND SPATIO-TEMPORAL EPIDEMIOLOGY
Volume 3, Issue 4, Pages 311-322Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.sste.2012.06.001
Keywords
Campylobacter infection; Danish broiler; Neighbourhood risk factors; Predicted probability map
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Funding
- Danish Agency for Science, Technology and Innovation [09-065034/FTP]
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Neighbourhood risk factors for Campylobacter infection in Danish broilers were evaluated. Campylobacter infection status of a flock was identified by PCR analysis of cloacal swab samples collected as a part of national surveillance program. Included into the study were, in total, 10,876 broiler flocks sent by 226 farms to processing plants from 2007 to 2009. A multivariable logistic regression model with autocorrelation structure was used to model the effect of exposure variables on the probability of being tested positive to Campylobacter. Results showed a significant protective effect with the absence of infected neighbours within a distance of 2 km. The analysis was adjusted for potential confounding factors. Seasonal cyclic patterns of the Campylobacter infection was accounted for by using sine and cosine function. Predicted probability maps showed a heterogeneous spatial and temporal risk of Campylobacter infection in Danish broiler. (C) 2012 Elsevier Ltd. All rights reserved.
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