After a nursery school trip to a dairy farm, 20 (53%) of 38 children and 3 (23%) of 13 adult helpers developed gastrointestinal infection.
Campylobacter jejuni was isolated from 15 primary cases and from 3 of 9 secondary household cases.
A cohort study of the school party found illness to be associated with drinking raw milk (relative risk 5.4,95% confidence interval 1.4-20.4, P=0.001).
There was a significant dose response relationship between amount of raw milk consumed and risk of illness (khi2-test for linear trend 12.1, P=0.0005) but not with incubation period, severity of symptoms or duration of illness.
All 18 human campylobacter isolates were C. jejuni resistotype 02 and either biotype I (number 16) or biotype II (number 2).
Campylobacter was also isolated from samples of dairy cattle and bird faeces obtained at the farm but these were of different resisto/biotypes.
Educational farm visits have become increasingly popular in recent years and this outbreak illustrates the hazard of exposure to raw milk in this setting.
Mots-clés Pascal : Enfant, Homme, Campylobacter jejuni, Campylobacteraceae, Bactérie, Lait cru, Bactériose, Infection, Epidémiologie, Programme éducatif, Milieu rural, Facteur risque, Intoxication alimentaire, Gastroentérite, Appareil digestif pathologie, Estomac pathologie, Intestin pathologie, Pays de Galles, Grande Bretagne, Royaume Uni, Europe
Mots-clés Pascal anglais : Child, Human, Campylobacter jejuni, Campylobacteraceae, Bacteria, Raw milk, Bacteriosis, Infection, Epidemiology, Educational schedule, Rural environment, Risk factor, Food poisoning, Gastroenteritis, Digestive diseases, Gastric disease, Intestinal disease, Wales, Great Britain, United Kingdom, Europe
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0044920
Code Inist : 002A05B11. Création : 21/05/1997.