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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2015 Typhoid Fever Outbreak Linked to an Asymptomatic Carrier - Weld County, Colorado

In September 2015 Colorado Department of Public Health and Environment (CDPHE) and Weld County Department of Public Health and Environment (WCDPHE) investigated an outbreak of Salmonella Tyhpi. Three outbreak associated cases were identified. All three patients had eaten at the same restaurant during August 16-20. Two patients were hospitalized. No one died. Public health investigators interviewed restaurant employees and collected rectal swab specimens. One employee was positive for Salmonella Typhi. Genetic testing by pulsed field gel electrophoresis showed the employee was infected with an indistinguishable strain of S. Typhi as ill restaurant patrons. Interviews with the restaurant worked revealed travel to a county with endemic typhoid fever 15 years earlier. The worker had no symptoms and no contact with ill persons. The worker was excluded from food service work and treated with azithromycin for 28 days.

  • Outbreak began:
  • September 2015
  • Affected Country:
  • US
  • Affected States/Territories:
  • N/A
  • Organism(s):
  • Salmonella
  • Vehicle(s):
  • Ill foodhandler
  • Molecular Results Available:
  • Unknown
  • Test Results:
  • None
  • Location(s):
  • Restaurant
  • Brand Name(s):
  • Product Subject to Recall:
  • No
  • Total ill:
  • 3
  • Number ill by Case Definition Known:
  • Yes
  • Number Laboratory Confirmed Cases:
  • 3
  • Number Probable Cases:
  • 0
  • Number Possible Cases:
  • 0
  • Anyone Hospitalized:
  • Yes
  • Number Hospitalized:
  • 2
  • Any Deaths:
  • No
  • Number Dead:
  • 0
  • Any References:
  • No

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