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Risk factors for the occurrence of sporadic Salmonella enterica serotype enteritidis infections in children in France: a national case-control study

Published online by Cambridge University Press:  01 December 1998

E. DELAROCQUE-ASTAGNEAU
Affiliation:
Réseau National de Santé Publique, 14, rue du Val d'Osne, 94415 Saint-Maurice cedex, France
J.-C. DESENCLOS
Affiliation:
Réseau National de Santé Publique, 14, rue du Val d'Osne, 94415 Saint-Maurice cedex, France
P. BOUVET
Affiliation:
Centre National de Référence pour les Salmonella et Shigella, Institut Pasteur, Paris
P. A. D. GRIMONT
Affiliation:
Centre National de Référence pour les Salmonella et Shigella, Institut Pasteur, Paris
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Abstract

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To determine risk factors associated with the occurrence of sporadic cases of Salmonella enteritidis infections among children in France, we conducted a matched case-control study. Cases were identified between 1 March and 30 September 1995. One hundred and five pairs of cases and controls matched for age and place of residence were interviewed. In the 1–5 years age group, illness was associated with the consumption of raw eggs or undercooked egg- containing foods (OR 2·4, 95% CI 1·2–4·8). Storing eggs more than 2 weeks after purchase was associated with Salmonella enteritidis infection (OR 3·8, 95% CI 1·4–10·2), particularly during the summer period (OR 6·0, 95% CI 1·3–26·8). Cases were more likely to report a case of diarrhoea in the household 10·3 days before the onset of symptoms, particularly in the age group [les ]1 year (P=0·01). This study confirms the link between eggs and the occurrence of sporadic cases of Salmonella enteritidis among children, highlights the potential role of prolonged egg storage and underlines the role of person-to-person transmission in infants.

Type
Research Article
Copyright
© 1998 Cambridge University Press