This study sought to determine wether a multistate fast food hamburger-associated outbreak of Escherichia coli O157 : H57 infection involved Las Vegas residents as well and, if so, why public health officials had not detected it.
A matched case-control study was conducted among persons with bloody diarrhea and their healthy meal companions.
Hamburger production, distribution, and cooking methods were reviewed.
Unused hamburger patties were cultured, and E. coli O157 : H57 isolates were characterized.
Local laboratory stool culture practices were reviewed.
Fifty-eight cases of bloody diarrhea were identified.
Illness was associated with eating regular hamburgers (matched odds ratio - (OR)=9.0,95% confidence interval (CI)=1.02,433.4), but 25% of ill persons reported eating only jumbo hamburgers.
Regular and jumbo hamburger patties yielded E. coli O157 : H57 indistinguishable from the lone clinical isolate.
No local laboratory cultured routinely for E. coli O157 : H57 until after the outbreak.
A large outbreak of E. coli O157 : H57 infections escaped timely notice in Las Vegas because local laboratories did not culture for this pathogen.
Health officials shoud encourage laboratories to screen at least all bloody stools on sorbitol-MacConkey medium.
Mots-clés Pascal : Intoxication alimentaire, Bactériose, Infection, Escherichia coli, Enterobacteriaceae, Bactérie, Hamburger, Foyer infectieux, Homme, Nevada, Etats Unis, Amérique du Nord, Amérique, Appareil digestif pathologie, Restauration rapide
Mots-clés Pascal anglais : Food poisoning, Bacteriosis, Infection, Escherichia coli, Enterobacteriaceae, Bacteria, Hamburger, Infectious focus, Human, Nevada, United States, North America, America, Digestive diseases
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0363032
Code Inist : 002B30A02A. Création : 12/09/1997.