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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2015 E. coli O157 Outbreak Linked to Chipotle Mexican Grill, Seattle, Washington

In early August 2015 Public Health Seattle King County (PHSKC) investigated an outbreak of E. coli O157 that occurred among five patrons of Chipotle Mexican Grill located at 1415 Broadway in Seattle, Washington. Illness onset dates occurred on July 28, 2015 (1 case), July 29 (2 cases) and July 31 (2 cases). All five cases reported experiencing diarrhea that turned bloody and abdominal cramps. Two cases reported vomiting. Two cases reported fever. Three cases were hospitalized. Two sought treatment at an emergency department. None of the patients developed Hemolytic Uremic Syndrome. There were no deaths. The Washington Department of Health (WDOH) Public Health Laboratory (PHL) conducted genetic testing by pulsed field gel electrophoresis (PFGE) on isolates cultured from patients’ specimens. Test results showed that all were infected with an indistinguishable genetic strain assigned PulseNet Identification Numbers EXHX01.0012/EXHA26.1779. This strain had not been seen previously in King County.

  • Outbreak began:
  • Unknown 2015
  • Affected Country:
  • US
  • Affected States/Territories:
  • Washington
  • Organism(s):
  • E. coli O157
  • Vehicle(s):
  • Unknown
  • Molecular Results Available:
  • Yes
  • Test Results:
  • EXHX01.0012/EXHA26.1779
  • Location(s):
  • Restaurant
  • Brand Name(s):
  • Chipotle Mexican Grill
  • Product Subject to Recall:
  • No
  • Total ill:
  • 5
  • Number ill by Case Definition Known:
  • Yes
  • Number Laboratory Confirmed Cases:
  • 5
  • Number Probable Cases:
  • 0
  • Number Possible Cases:
  • 0
  • Anyone Hospitalized:
  • Yes
  • Number Hospitalized:
  • 3
  • Any Deaths:
  • No
  • Number Dead:
  • 0
  • Any References:
  • No

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