County Fair Chocolate Scare: An Investigation of Unintentional Marijuana Ingestion Case Study

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Author: Colorado Food Safety Center

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This case study is based on a foodborne illness outbreak caused by the unintentional ingestion of marijuana-infused foods (edibles) at a county fair in Colorado. It is designed to facilitate a discussion among epidemiologists and other public health professionals about how to respond to an outbreak involving a marijuana-infused food.

Program: Environmental Health

Submitted Date: Jul 25, 2017 | Modified Date: Sep 30, 2025

Primary Toolkit: Food Safety Toolkit | Secondary Toolkit: N/A

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Institution Type: Association,

Keywords: Environmental Health, Food Safety and Inspection

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