A Multistate Outbreak of Cyclosporiasis

Jeanette K. Stehr-Green, MD
Date published
Aug, 2004
Last updated
31 Jan 2020


Local outbreak of cyclosporiasis was harbinger of multistate outbreak in 1996-1997; initially thought linked to strawberries, ultimately traced to raspberries from Guatemala.  


  • Use the modes of transmission and incubation period for a disease to focus the search for the source of an outbreak;
  • Describe the two most common types of epidemiologic studies routinely used to investigate outbreaks;
  • Interpret the results of an epidemiologic study;
  • Consider potential sources of error in designing or carrying out an epidemiologic study;
  • Apply the criteria for causation to the results of an outbreak investigation;
  • List considerations in implementing control measures before confirmation of the source of an outbreak;
  • Describe the occurrence, signs and symptoms, and control of cyclosporiasis.