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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Restaurant Tossed Salad 1992

Investigation into a cluster of Shigella flexneri cases in Michigan and Ohio suggested that consumption of tossed salad at one of several outlets of a restaurant chain was a risk factor for illness. The tossed salad had been prepared at a central commissary and then distributed to the restaurant chain's outlets. Inspection of the commissary revealed poor food handling technique and ill food handlers shortly before the outbreak began. None of the stool samples collected from the food workers grew Shigella. None of the salads tested by the Michigan Department of Health grew Shigella. The source of the contamination was suspected to be a food worker at the commissary.

  • Outbreak began:
  • July 1992
  • Affected Country:
  • US
  • Affected States/Territories:
  • Ohio
  • Organism(s):
  • Shigella
  • Vehicle(s):
  • Vegetable, Tossed Salad, Iceberg Lettuce, Romaine Lettuce, Cabbage, Carrots
  • Molecular Results Available:
  • Yes
  • Test Results:
  • Unknown
  • Location(s):
  • Restaurant
  • Brand Name(s):
  • Product Subject to Recall:
  • No
  • Total ill:
  • 46
  • Number ill by Case Definition Known:
  • Yes
  • Number Laboratory Confirmed Cases:
  • 46
  • Number Probable Cases:
  • 0
  • Number Possible Cases:
  • 0
  • Anyone Hospitalized:
  • Unknown
  • Number Hospitalized:
  • Unknown
  • Any Deaths:
  • Unknown
  • Number Dead:
  • Unknown
  • Any References:
  • Yes

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