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 Hepatitis A at Subway, King County, Washington

Patrons of two Subway Restaurant outlets that were located in northern neighborhoods of Seattle, Washington, developed hepatitis A. Some of the food workers were tested for hepatitis A; among these food handlers no evidence of hepatitis A was found. There were rumors about an ill food handler who had worked at both restaurant outlets during the likely period of exposure. This food handler was never found for testing. Neither Subway Restaurant outlet had a written handwashing policy. Poor supervision of staff and movement of staff between the two outlets probably contributed to the outbreak.

  • Outbreak began:
  • October 1999
  • Affected Country:
  • US
  • Affected States/Territories:
  • N/A
  • Organism(s):
  • Hepatitis
  • Vehicle(s):
  • Food Worker
  • Molecular Results Available:
  • Unknown
  • Test Results:
  • None
  • Location(s):
  • Restaurant
  • Brand Name(s):
  • Product Subject to Recall:
  • Unknown
  • Total ill:
  • 31
  • Number ill by Case Definition Known:
  • Yes
  • Number Laboratory Confirmed Cases:
  • 31
  • Number Probable Cases:
  • 0
  • Number Possible Cases:
  • 0
  • Anyone Hospitalized:
  • Unknown
  • Number Hospitalized:
  • Unknown
  • Any Deaths:
  • Unknown
  • Number Dead:
  • Unknown

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