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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2005 Outbreak of Cyclospora Infections at a Restaurant, Connecticut

In June, health department officials received reports of a cluster of cases with gastrointestinal illness. The first four reported cases had eaten at the same New Haven, Connecticut, restaurant between June 24 and 25. Stool samples showed all four had been infected with Cyclospora. Additional cases were identified when all positive Cyclospora cases were reported to the state health department. A case-control study found significant risk associated with dining at one restaurant, and specifically with the consumption of both the bruschetta and the house salad. Red onions were used in both dishes, but the same cutting board was used for many vegetables and herbs making cross-contamination possible. Based on past outbreaks, the health department workers thought fresh basil could be the contaminated food and requested the Food and Drug Administration do a traceback. The traceback found neither a source of contamination, nor the origin of the basil.

  • Outbreak began:
  • June 2005
  • Affected Country:
  • US
  • Affected States/Territories:
  • N/A
  • Organism(s):
  • Cyclospora
  • Vehicle(s):
  • Unknown Herb or Spice, Fresh Basil Cross-contamination
  • Molecular Results Available:
  • No
  • Test Results:
  • None
  • Location(s):
  • Restaurant
  • Brand Name(s):
  • Product Subject to Recall:
  • No
  • Total ill:
  • 30
  • Number ill by Case Definition Known:
  • Yes
  • Number Laboratory Confirmed Cases:
  • 14
  • Number Probable Cases:
  • 16
  • Number Possible Cases:
  • 0
  • Anyone Hospitalized:
  • Yes
  • Number Hospitalized:
  • 1
  • Any Deaths:
  • No
  • Number Dead:
  • 0
  • Any References:
  • Yes

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