fieldepi5_oswego

fieldepi5_oswego - 1 Oswego An Outbreak of Gastrointestinal...

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Center for Infectious Disease Preparedness UC Berkeley School of Public Health http://www.idready.org 1 Oswego – An Outbreak of Gastrointestinal Illness Following a Church Supper Tomás Aragón, MD, DrPH Director and medical epidemiologist Center for Infectious Disease Preparedness UC Berkeley School of Public Health aragon@berkeley.edu, http://www.idready.org Modified 04/30/2004 Slides created using free, open source software: http://www.openoffice.org
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Center for Infectious Disease Preparedness UC Berkeley School of Public Health http://www.idready.org 2 This is a CDC training module http://www.cdc.gov/eis/casestudies/casestudies.htm This case study narrative comes from the student module The answers in these slides were adapted from the instructor module
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Center for Infectious Disease Preparedness UC Berkeley School of Public Health http://www.idready.org 3 Part I – Background On April 19, 1940, the local health officer in the village of Lycoming, Oswego County, New York, reported the occurrence of an outbreak of acute gastrointestinal illness to the District Health Officer in Syracuse. Dr. A. M. Rubin, epidemiologist-in-training, was assigned to conduct an investigation.
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Center for Infectious Disease Preparedness UC Berkeley School of Public Health http://www.idready.org 4 Part I – Background (cont'd) When Dr. Rubin arrived in the field, he learned from the health officer that all persons known to be ill had attended a church supper held on the previous evening, April 18. Family members who did not attend the church supper did not become ill. Accordingly, Dr. Rubin focused the investigation on the supper. He completed Interviews with 75 of the 80 persons known to have attended, collecting information about the occurrence and time of onset of symptoms, and foods consumed. Of the 75 persons interviewed, 46 persons reported gastrointestinal illness.
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Center for Infectious Disease Preparedness UC Berkeley School of Public Health http://www.idready.org 5 Question 1 Would you call this an epidemic? Would you call it an outbreak?
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Center for Infectious Disease Preparedness UC Berkeley School of Public Health http://www.idready.org 6 Outbreaks, epidemics, and clusters Outbreak Epidemic Cluster
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Center for Infectious Disease Preparedness UC Berkeley School of Public Health http://www.idready.org 7 Question 2 Review the steps of an outbreak investigation.
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Center for Infectious Disease Preparedness UC Berkeley School of Public Health http://www.idready.org 8 Steps of an outbreak investigation* Case investigation (outcome variable) Cause investigation (exposure variables) Conduct analytic study (if necessary) Conclusions Control measures Continue surveillance Communicate findings *See next slide for comprehensive summary of steps
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Center for Infectious Disease Preparedness UC Berkeley School of Public Health http://www.idready.org 9 Case investigation Confirm diagnosis Case definition Case finding
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This note was uploaded on 09/14/2011 for the course PHARM gs taught by Professor Staff during the Spring '11 term at UCSD.

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fieldepi5_oswego - 1 Oswego An Outbreak of Gastrointestinal...

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