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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1998 Alpine, Wyoming, Municipal Water

An outbreak of E. coli O157:H7 was linked to drinking water from the municipal water supply of Alpine, Wyoming. The water supply of Alpine originated from an underground stream, was collected and stored in a tank, and then distributed, unchlorinated, to the town. There had been several positive coliform test reading just prior to the outbreak, however the system was in compliance with water standards. The system likely became contaminated with surface water. E. coli O157:H7 was never isolated from the water, however water samples from the storage tank collected on July 14 yielded a high coliform count. Entercoccus faecium was isolated from the same water sample, indicating fecal contamination.

  • Outbreak began:
  • June 1998
  • Affected Country:
  • US
  • Affected States/Territories:
  • N/A
  • Organism(s):
  • E. coli O157:H7
  • Vehicle(s):
  • Water, Municipal
  • Molecular Results Available:
  • Unknown
  • Test Results:
  • None
  • Location(s):
  • Private Homes
  • Brand Name(s):
  • Product Subject to Recall:
  • Unknown
  • Total ill:
  • 157
  • 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:
  • 4
  • Any Deaths:
  • No
  • Number Dead:
  • 0
  • Any References:
  • Yes

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