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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Canada Home for the Aged Unknown 1982

In November 1982, 31 (8.8%) of 353 residents at a home for the aged in Ottawa, Ontario, Canada, became ill with gastrointestinal symptoms. Cases occurred over an 18-day period. None of the usual enteric pathogens (Salmonella, Shigella, Campylobacter, Yersinia, or Amoeba) were found in stool specimens obtained from the 31 affected residents. Escherichia coli O157:H7 was isolated from the stools of 17 patients, with the isolation rate higher for those with watery, bloody diarrhea (78%) than for those with loose stools only (38%). In studies of serial stool specimens, E. coli O157:H7 was usually isolated from the time diarrhea began until formed stools returned, up to 11 days after onset. Food prepared in the home's kitchen was a possible source of the outbreak. A single lot of hamburger had been served repeatedly between November 6 and 20 and was considered the most likely vehicle. Two samples of frozen meat from this lot were cultured, but E. coli O157:H7 was not recovered.

  • Outbreak began:
  • November 1982
  • Affected Country:
  • International
  • Affected States/Territories:
  • Not Applicable
  • Organism(s):
  • E. coli O157:H7
  • Vehicle(s):
  • Unknown
  • Molecular Results Available:
  • Unknown
  • Test Results:
  • None
  • Location(s):
  • Nursing Home
  • Brand Name(s):
  • Product Subject to Recall:
  • Unknown
  • Total ill:
  • 31
  • 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:
  • Unknown
  • Number Dead:
  • Unknown
  • Any References:
  • Yes

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