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 Salmonella Associated Alfalfa Sprouts, Canada

Alfalfa sprouts were identified as the cause of an outbreak of Salmonella Paratyphi. A total of 51 cases were reported with 43 in Alberta, six in British Columbia, and two in Saskatchewan. Six opened packages of alfalfa sprouts were taken from cases' homes. Two packages were positive for Salmonella Paratyphi; one package was positive for Salmonella Litchfield, another one for Salmonella Thompson, and another one for Salmonella Newport. No Salmonella was isolated from one package. Of 21 retail samples tested, five were positive for Salmonella, including S. Newport, S. Litchfield, and S. Give. The alfalfa sprout seeds had been grown on several farms and sent to a seed cleaning plant in Kentucky. The seeds were mixed into one seed lot and were distributed to a manufacturer in Ontario. The Ontario manufacturer forwarded all seeds to the Alberta manufacturer. The Alberta manufacturer sent seeds to processing plants in Saskatchewan and British Columbia. Nine additional persons were reported during the outbreak period with S. Newport, S. Thompson, or S. Litchfield; some of these persons had reported eating alfalfa sprouts.

  • Outbreak began:
  • August 1999
  • Affected Country:
  • International
  • Affected States/Territories:
  • Not Applicable
  • Organism(s):
  • Salmonella
  • Vehicle(s):
  • Vegetable, Sprouts, Alfalfa Sprouts
  • Molecular Results Available:
  • Yes
  • Test Results:
  • PFGE pattern A1 and A2
  • Location(s):
  • Grocery stores
  • Brand Name(s):
  • Unknown
  • Product Subject to Recall:
  • Unknown
  • Total ill:
  • 51
  • Number ill by Case Definition Known:
  • Yes
  • Number Laboratory Confirmed Cases:
  • 51
  • Number Probable Cases:
  • 0
  • Number Possible Cases:
  • 0
  • Anyone Hospitalized:
  • Unknown
  • Number Hospitalized:
  • Unknown
  • Any Deaths:
  • Unknown
  • Number Dead:
  • Unknown
  • Any References:
  • Yes

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