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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Connecticut Country Club Hamburgers 1993

An outbreak of E. coli O157:H7 occurred among attendees of two picnics, on September 5 and 6, at a Connecticut country club. The hamburger patties were heavily contaminated with E. coli O157:H7. The E. coli O157:H7 isolates from the case-patients were a genetic match to that of the beef. Illness risk was increased for those who were served medium and rare hamburgers. According to the chef, some of the hamburgers were still frozen at the time of cooking and may not have been cooked all the way through. The beef had come from via a New York distributor from one of two large, mid-western, beef packing companies. Six large slaughter houses supplied the beef packing companies.

  • Outbreak began:
  • September 1993
  • Affected Country:
  • US
  • Affected States/Territories:
  • N/A
  • Organism(s):
  • E. coli O157:H7
  • Vehicle(s):
  • Beef, Ground Beef, Hamburger
  • Molecular Results Available:
  • Yes
  • Test Results:
  • Unknown
  • Location(s):
  • Country Club
  • Brand Name(s):
  • Product Subject to Recall:
  • Unknown
  • Total ill:
  • 23
  • Number ill by Case Definition Known:
  • Yes
  • Number Laboratory Confirmed Cases:
  • 5
  • Number Probable Cases:
  • 18
  • Number Possible Cases:
  • 0
  • Anyone Hospitalized:
  • Yes
  • Number Hospitalized:
  • 4
  • Any Deaths:
  • No
  • Number Dead:
  • 0
  • Any References:
  • Yes

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