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  1. An outbreak of Shigella dysenteriae type 2 among laboratory workers due to intentional food contamination.

    Article - En anglais

    Context. - Shigella dysenteriae type 2 is rare in the United States, and outbreaks associated with this pathogen are uncommon.

    Objective

    - To determine the magnitude and source of an outbreak of S dysenteriae type 2. Design. - Retrospective cohort.

    Setting

    - Laboratory of a large medical center.

    Patients

    - Case patients were identified as laboratory workers who had diarrhea on or after October 28 and a positive stool culture or temperature greater than 37.8°C. Laboratory workers with diarrhea only were probable case patients.

    Main Outcome Measures

    - We interviewed laboratory staff and performed identification, serotyping, and pulsed-field get electrophoresis on isolates from case patients, implicated food, and laboratory stock culture.

    Results

    - From October 29 through November 1, a total of 12 (27%) of 45 laboratory staff developed severe, acute diarrheal illness ; 8 had S dysenteriae isolated from stool and 4 were hospitalized.

    All case patients reported having eaten muffins or doughnuts placed in the staff break room on October 29.

    Pulsed-field get electrophoresis showed stool isolates from 9 case patients were indistinguishable from S dysenteriae type 2 recovered from an uneaten muffin and from the laboratory's stock strain, a portion of which was missing.

    Conclusions

    - The source of the outbreak was most likely the laboratory's stock culture, which was used to contaminate the pastries. (...)

    Mots-clés Pascal : Shigella dysenteriae, Enterobacteriaceae, Bactérie, Epidémiologie, Rétrospective, Contamination, Etude cohorte, Examen laboratoire, Etiologie, Homme, Appareil digestif pathologie, Bactériose, Infection, Organisation santé

    Mots-clés Pascal anglais : Shigella dysenteriae, Enterobacteriaceae, Bacteria, Epidemiology, Retrospective, Contamination, Cohort study, Laboratory investigations, Etiology, Human, Digestive diseases, Bacteriosis, Infection, Public health organization

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 97-0417651

    Code Inist : 002B05B02F. Création : 19/12/1997.