Foodborne Illness Outbreak Database

This database provides summaries of significant food and water related outbreaks occurring since 1984 caused by E. coli, Salmonella, Hepatitis A, Campylobacter and other pathogens. Read more »

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Sizzler Restaurants Salad Bars 1993

From March through August 1993, outbreaks of E. coli O157:H7 occurred at four separate Oregon and Washington Sizzler restaurants. These restaurants served meats and seafood entries and featured a large, self-service, salad and food bar with more than 100 items. Consumption of beef or other meats was not associated with illness in any of the outbreaks. The locations having outbreaks included: Grants Pass, Oregon (Mar.); North Bend, Oregon (Mar.); Corvallis, Oregon (Aug.); Seattle, WA (Aug.), Implicated foods varied by restaurant but all were items served at the salad bar. Among the salad bar items, no single item was implicated in all outbreaks, and no single item seemed to explain most of the cases at any individual restaurant. Molecular subtyping of bacterial isolates indicated that the first 2 outbreaks, which occurred concurrently, were caused by the same strain, the third outbreak was caused by a unique strain, and the fourth was multiclonal. Cross-contamination from beef within the independent restaurant kitchens, where meats and multiple salad bar items were prepared, were the likely cause of these outbreaks.

  • Outbreak began:
  • March 1993
  • Affected Country:
  • US
  • Affected States/Territories:
  • Oregon
  • Organism(s):
  • E. coli O157:H7
  • Vehicle(s):
  • Produce based Salads, Salad bar
  • Molecular Results Available:
  • Yes
  • Test Results:
  • Multiple
  • Location(s):
  • Restaurant
  • Brand Name(s):
  • Product Subject to Recall:
  • No
  • Total ill:
  • 93
  • Number ill by Case Definition Known:
  • Yes
  • Number Laboratory Confirmed Cases:
  • 39
  • Number Probable Cases:
  • 54
  • Number Possible Cases:
  • 0
  • Anyone Hospitalized:
  • Yes
  • Number Hospitalized:
  • 15
  • Any Deaths:
  • No
  • Number Dead:
  • 0
  • Any References:
  • Yes

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