Case Study: A Multistate Outbreak of Cyclosporiasis

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Jeanette Stehr-Green
Date published
Dec, 2014
Last updated
15 Oct 2019


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