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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1999 Outbreak of E. coli O157 in Clark County, Washington

A large outbreak of E. coli O157:H7 occurred among visitors to a lake, in a state park, in Clark County, Washington. All cases were children who had swum in the lake. Tests of lake water and sediment samples collected in early September, from the children's swimming area, identified E. coli O157:H7 in the sediment sample that matched the strain that had been isolated from the children.

  • Outbreak began:
  • August 1999
  • Affected Country:
  • US
  • Affected States/Territories:
  • Washington
  • Organism(s):
  • E. coli O157:H7
  • Vehicle(s):
  • Water, Recreational Water, Lake
  • Molecular Results Available:
  • Yes
  • Test Results:
  • Unknown
  • Location(s):
  • Lake
  • Brand Name(s):
  • Product Subject to Recall:
  • No
  • Total ill:
  • 37
  • Number ill by Case Definition Known:
  • Yes
  • Number Laboratory Confirmed Cases:
  • 37
  • Number Probable Cases:
  • 0
  • Number Possible Cases:
  • 0
  • Anyone Hospitalized:
  • Yes
  • Number Hospitalized:
  • 8
  • Any Deaths:
  • No
  • Number Dead:
  • 0
  • Any References:
  • Yes

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