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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Ground Beef 1986

Cases of E. coli O157:H7 were detected throughout Washington state in November, 1986. The outbreak was detected after a physician in eastern Washington hospitalized three patients with hemorrhagic colitis which progressed to thrombotic thrombocytopenic purpura. Illnesses occurred among patrons of a specific restaurant, and nursing homes. It was suspected that ground beef was the vehicle. Tracing of the beef led to farms where cattle were shown to be carrying E.coli O157:H7. The E. coli O157: H7 strains that the cattle carried were different from the common strain that caused the human illnesses.

  • Outbreak began:
  • November 1986
  • Affected Country:
  • US
  • Affected States/Territories:
  • N/A
  • Organism(s):
  • E. coli O157:H7
  • Vehicle(s):
  • Beef, Ground Beef
  • Molecular Results Available:
  • Yes
  • Test Results:
  • Unknown
  • Location(s):
  • Restaurant, Nursing Home
  • Brand Name(s):
  • Product Subject to Recall:
  • No
  • Total ill:
  • 37
  • 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:
  • Yes
  • Number Hospitalized:
  • 3
  • Any Deaths:
  • Unknown
  • Number Dead:
  • Unknown
  • Any References:
  • Yes

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