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Epidemiol Infect. 2010 Dec;138(12):1735-43. doi: 10.1017/S0950268810001081. Epub 2010 May 24.

The impact of domestic travel on estimating regional rates of human campylobacteriosis.

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  • 1Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montréal, Québec, Canada. kate.zinszer@mail.mcgill.ca

Abstract

Residential locations of cases are often used as proxy measures for the likely place of exposure and this assumption may result in biases affecting both surveillance and epidemiological studies. This study aimed to describe the importance of domestic travel in cases of human campylobacteriosis reported during routine surveillance in Iceland from 2001 to 2005. Various measures of disease frequency were calculated based upon the cases' region of residence, adjusting location of domestic travel cases to their travel region, as well as separate estimations for travellers and non-travellers. Of the 376 cases included in the analysis, 37% had travelled domestically during their incubation period. Five of the eight regions were identified as high-risk when considering domestic travel whereas there were no high-risk regions when considering only region of residence. The change in regional representation of disease occurrence indicates the importance of collecting domestic travel information in ongoing surveillance activities.

PMID:
20492744
[PubMed - indexed for MEDLINE]
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