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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1990 Outbreak of Cyclosporiasis Linked to Chicago Hospital Physicians' Dormitory Water, Illinois

An outbreak of Cyclosporiasis was epidemiologically linked to the consumption of tap water within a physicians' dormitory at a hospital in Chicago, Illinois. Drinking tap water in the physicians' dormitory or attending a housestaff association party held on 29 June in the physicians' dormitory were significantly associated with illness. The water storage tanks were not sealed from environmental contamination, and the stagnant zone at the bottom of the tanks could have permitted the growth or multiplication of microorganisms. After the water system pump had failed and the storage tank was emptied, the water at the bottom of the tank likely was stirred up when the pump was fixed and water splashed into the tank. This was the first reported outbreak of diarrheal illness due to Cyclospora in the United States.

  • Outbreak began:
  • July 1990
  • Affected Country:
  • US
  • Affected States/Territories:
  • Illinois
  • Organism(s):
  • Cyclospora
  • Vehicle(s):
  • Water, Tap Water
  • Molecular Results Available:
  • Unknown
  • Test Results:
  • None
  • Location(s):
  • Hospital
  • Brand Name(s):
  • Product Subject to Recall:
  • No
  • Total ill:
  • 27
  • Number ill by Case Definition Known:
  • Unknown
  • Number Laboratory Confirmed Cases:
  • N/A
  • Number Probable Cases:
  • N/A
  • Number Possible Cases:
  • N/A
  • Anyone Hospitalized:
  • Unknown
  • Number Hospitalized:
  • Unknown
  • Any Deaths:
  • Unknown
  • Number Dead:
  • Unknown
  • Any References:
  • Yes

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