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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1993 Outbreak of E. coli O157:H7 Linked to Ground Beef Sold at a Grocery Store, California

Ten cases (including three laboratory confirmed cases) of E.coli O157:H7 occurred in a small California community. These illnesses were traced to the consumption of hamburger that had been purchased from a local grocery store. E.coli O157:H7, phage type 31, was isolated from the meat leftover from one person's home. This was the same strain that had been isolated from the laboratory confirmed cases. E.coli O157:H7, phage type 31, was identified in additional ground beef samples taken from one market. E. coli O157:H7 was identified in a ground beef sample from another market, but it was phage type 4 which was not associated with this outbreak.

  • Outbreak began:
  • July 1993
  • Affected Country:
  • US
  • Affected States/Territories:
  • California
  • Organism(s):
  • E. coli O157:H7
  • Vehicle(s):
  • Beef, Ground Beef, Hamburger
  • Molecular Results Available:
  • Yes
  • Test Results:
  • Unknown
  • Location(s):
  • Grocery Store, Retail
  • Brand Name(s):
  • Product Subject to Recall:
  • Yes
  • Total ill:
  • 10
  • Number ill by Case Definition Known:
  • Yes
  • Number Laboratory Confirmed Cases:
  • 3
  • Number Probable Cases:
  • 7
  • Number Possible Cases:
  • 0
  • Anyone Hospitalized:
  • Unknown
  • Number Hospitalized:
  • Unknown
  • Any Deaths:
  • Yes
  • Number Dead:
  • 1
  • Any References:
  • Yes

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