No Fair Warning: An Outbreak Following the 1999 Washington County Fair

Richard C. Dicker
Date published
Jan, 2005
Last updated
22 Jan 2020


Large outbreak of both E. coli and Campylobacter traced to unregulated fairground water supply, 1999; another straightforward outbreak investigation.

Learning Objectives:

After completing this case study, the participant should be able to:

  • List the reasons to investigate an outbreak;
  • List and discuss each step in the investigation of an outbreak;
  • Describe the features of an appropriate case definition; and
  • Construct an epidemic curve.