A large community outbreak of salmonellosis caused by intentional contamination of restaurant salad bars.
Context. - This large outbreak of foodborne disease highlights the challenge of investigating outbreaks caused by intentional contamination and demonstrates the vulnerability of self-service foods to intentional contamination.
- To investigate a large community outbreak of Salmonella Typhimurium infections.
- Epidemiologic investigation of patients with Salmonella gastroenteritis and possible exposures in The Dalles, Oregon.
Cohort and case-control investigations were conducted among groups of restaurant patrons and employees to identify exposures associated with illness.
- A community in Oregon.
Outbreak period was September and October 1984.
- A total of 751 persons with Salmonella gastroenteritis associated with eating or working at area restaurants.
Most patients were identified through passive surveillance ; active surveillance was conducted for selected groups.
A case was defined either by clinical criteria or by a stool culture yielding STyphimurium.
- The outbreak occurred in 2 waves, September 9 through 18 and September 19 through October 10.
Most cases were associated with 10 restaurants, and epidemiologic studies of customers at 4 restaurants and of employees at all 10 restaurants implicated eating from salad bars as the major risk factor for infection.
Eight (80%) of 10 affected restaurants compared with only 3 (1 1%) of the 28 other restaurants in The Dalles operated salad bars (relative risk, 7. (...)
Mots-clés Pascal : Salmonellose, Bactériose, Infection, Epidémiologie, Communauté, Contamination, Etiologie, Restaurant, Salade, Etude cohorte, Evaluation, Homme, Etats Unis, Amérique du Nord, Amérique, Appareil digestif pathologie, Organisation santé
Mots-clés Pascal anglais : Salmonellosis, Bacteriosis, Infection, Epidemiology, Community, Contamination, Etiology, Restaurant, Salad, Cohort study, Evaluation, Human, United States, North America, America, Digestive diseases, Public health organization
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0417650
Code Inist : 002B05B02F. Création : 19/12/1997.