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Epidemiol Infect. 2003 Jun;130(3):353-66.

A case-control study of risk factors for sporadic campylobacter infections in Denmark.

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Danish Zoonosis Centre, Danish Veterinary Institute, Bülowsvej 27, DK-1790 Copenhagen V, Denmark.


A case control study comprising 282 cases and 319 matched controls was conducted in Denmark during 1996-7. Two estimates of the odds ratio (OR) were determined for each risk factor with and without 'protective factors' fitted into the final model. Consumption of undercooked poultry (OR 4.5; 8.2), consumption of red meat at a barbecue (OR 2.3; 4.1), consumption of grapes (OR 1.6; 2.8) and drinking unpasteurized milk (OR 2.3; 11.8) were identified as risk factors in both models. Frequent consumption of pork chops (OR 4.4) and daily contact with domestic animals and pets were identified as risk factors in one of the two models only. Finally, foreign travel was found to be a significant risk factor (OR 2.5). Seasonal and regional interaction was observed for several risk factors and the time elapsed from interviewing of cases to interviewing of controls seemed to influence the effect of certain seasonal dependent risk factors.

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