Hepatitis A, Oysters and Alcohol

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Jean-Claude Desenclos
Date published
Oct, 2002
Last updated
22 Jan 2020


This case study deals with the effect of ingesting alcohol at the same time as food contaminated with a specific infectious agent. It is based on a study performed during an outbreak investigation in the U.S. in 1988.

Learning Objectives:

  • To understand the concept of confounding    
  • To adjust for confounding during data analysis     
  • To estimate a summary measure of association using the Mantel-Haenszel method