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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2013 Cryptosporidiosis Associated with a Community Pool, Olmsted County, Minnesota

In September 2013 investigators at the Minnesota Department of Health (MDH) and the Olmsted County Public Health Services (OCPHS) identified 10 cases of cryptosporidiosis who reported swimming in a community pool. Two cases were laboratory confirmed. The MDH Public Health Laboratory identified Cryptosporidium hominis subtype HGP15 in a specimen. Reported onset dates ranged from August 27 to September 9. The median incubation could not be calculated as cases reported multiple swim dates prior to illness. Review of pool records indicated there was a fecal accident on August 29. Pool staff reported that in response to the accident, the pool was closed for 30 minutes, the feces was removed and the free chlorine was raised to 2 ppm. Although the original source of contamination was not identified, an infectious pool user most likely introduced the parasite into the pool.

  • Outbreak began:
  • August 2013
  • Affected Country:
  • US
  • Affected States/Territories:
  • Minnesota
  • Organism(s):
  • Cryptosporidium
  • Vehicle(s):
  • Recreational water
  • Molecular Results Available:
  • Yes
  • Test Results:
  • HGP15
  • Location(s):
  • Swimming pool
  • Brand Name(s):
  • Product Subject to Recall:
  • No
  • Total ill:
  • 10
  • Number ill by Case Definition Known:
  • Yes
  • Number Laboratory Confirmed Cases:
  • 2
  • Number Probable Cases:
  • 8
  • Number Possible Cases:
  • 0
  • Anyone Hospitalized:
  • Unknown
  • Number Hospitalized:
  • Unknown
  • Any Deaths:
  • No
  • Number Dead:
  • 0
  • Any References:
  • No

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