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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Outbreak of E. coli O157 at Frederico's Mexican Restaurant, July 2013

Maricopa County Department of Public Health investigated an outbreak of E. coli O157:H7 which occurred in July 2013. A total of 94 ill persons were identified. The source of the outbreak was traced to a single location of Federico's Mexican Restaurant chain located at 13132 West Camelback Road in Litchfield Park, Arizona. Exposure dates occurred between July 18 and July 30. A case-control study of 180 persons was performed, and environmental samples were collected on multiple dates. The findings from the environmental samples and the case-control study both implicated contaminated lettuce as the probable source of the outbreak and vehicle for the E. coli O157:H7 that caused illness.

  • Outbreak began:
  • July 2013
  • Affected Country:
  • US
  • Affected States/Territories:
  • Arizona
  • Organism(s):
  • E. coli O157:H7
  • Vehicle(s):
  • lettuce
  • Molecular Results Available:
  • Yes
  • Test Results:
  • EXHX01.1347/EXHA26.1602
  • Location(s):
  • Restaurant
  • Brand Name(s):
  • Frederico's
  • Product Subject to Recall:
  • No
  • Total ill:
  • 0
  • Number ill by Case Definition Known:
  • Yes
  • Number Laboratory Confirmed Cases:
  • 59
  • Number Probable Cases:
  • 35
  • Number Possible Cases:
  • 0
  • Anyone Hospitalized:
  • Yes
  • Number Hospitalized:
  • 22
  • Any Deaths:
  • No
  • Number Dead:
  • 0

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