A protracted outbreak of Escherichia coil O157 : H7 infections was caused by consumption of unpasteurized ( « raw ») milk sold at Oregon grocery stores.
Although it never caused a noticeable increase in reported infections, the outbreak was recognized because of routine follow-up interviews.
Six of 16 Portland-area cases reported between December 1992 and April 1993 involved people who drank raw milk from dairy A. By pulsed-field gel electrophoresis (PFGE), E. coli O157 : H7 isolates from these cases and from the dairy A herd were homologous (initially, 4 of 132 animals were E. coli O157 : H7-positive).
Despite public warnings, new labeling requirements, and increased monitoring of dairy A, retail sales and dairy-associated infections continued until June 1994 (a total of 14 primary cases).
Seven distinguishable PFGE patterns in 3 homology groups were identified among patient and dairy herd E. coli O157 : H7 isolates.
Without restrictions on distribution, E.
Coli O157 : H7 outbreaks caused by raw milk consumption can continue indefinitely, with infections occurring intermittently and unpredictably.
Mots-clés Pascal : Escherichia coli, Enterobacteriaceae, Bactérie, Colibacillose, Bactériose, Infection, Epidémiologie, Contamination biologique, Intoxication alimentaire, Lait cru, Homme, Produit frais, Oregon, Etats Unis, Amérique du Nord, Amérique, Intestin pathologie, Appareil digestif pathologie
Mots-clés Pascal anglais : Escherichia coli, Enterobacteriaceae, Bacteria, Colibacillosis, Bacteriosis, Infection, Epidemiology, Biological contamination, Food poisoning, Raw milk, Human, Fresh product, Oregon, United States, North America, America, Intestinal disease, Digestive diseases
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0505642
Code Inist : 002B05B02F. Création : 13/02/1998.