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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2012 Campylobacter jejuni Infections Linked to Consumption of Raw Milk

In May 2012 Minnesota and Wisconsin public health and agriculture officials investigated an outbreak of Campylobacter jejuni among members of a 5th grade class who visited a farm school located near Glenwood City, Wisconsin. During the trip which took place between May 9-11, a 5th grade teacher purchased raw milk at a farm the group visited. The teacher shared the milk with students and teachers in his class as well as with his 6 year old son. Investigators interviewed adult chaperones, teachers and students present on the trip. Seven persons met the case definition. All 7 cases reported diarrhea and cramps. Six of the 7 cases consumed raw milk. The median incubation period was 6 days (range 3 to 10 days). One person sought medical care. No one was hospitalized and no one died. Two cases submitted stool samples for laboratory testing. Both were culture positive for Campylobacter jejuni. Raw milk samples collected at the farm also tested positive for C. jejuni. Isolates of C. jejuni from both cases and the raw milk were indistinguishable by PFGE, Minnesota subtype designation CMP31.

  • Outbreak began:
  • May 2012
  • Affected Country:
  • US
  • Affected States/Territories:
  • Minnesota
  • Organism(s):
  • Campylobacter
  • Vehicle(s):
  • Raw milk
  • Molecular Results Available:
  • Yes
  • Test Results:
  • CMP31 (Minnesota designation)
  • Location(s):
  • Farm
  • Brand Name(s):
  • Product Subject to Recall:
  • No
  • Total ill:
  • 7
  • Number ill by Case Definition Known:
  • Yes
  • Number Laboratory Confirmed Cases:
  • 2
  • Number Probable Cases:
  • 5
  • Number Possible Cases:
  • 0
  • Anyone Hospitalized:
  • No
  • Number Hospitalized:
  • 0
  • Any Deaths:
  • No
  • Number Dead:
  • 0
  • Any References:
  • No

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