During foodborne illness outbreak investigations, public health and regulatory authorities collect three types of data to determine a common food consumed by ill people: epidemiologic, traceback, and laboratory. State and local partners work with FDA to conduct traceback investigations and examine the food supply chain to determine the origin of the foods identified by the epidemiologic investigations. This article looks at the benefits of using incident command system (ICS) principles during emergency response coordination activities for foodborne illness outbreaks, with input from members of the FDA's CORE Network.

FDA Coordinated Outbreak Response and Evaluation Network (CORE), in collaboration with the U.S. Centers for Disease Control and Prevention (CDC), and state and local public health and regulatory partners, conduct foodborne illness outbreak investigations, including those related to Cyclospora cayetanensis infections. In this article, the authors review the successes and challenges of identifying and responding to outbreaks caused by C. cayetanensis infections since 2013, the progress made, the challenges remaining, and what the future holds.

After a foodborne outbreak is identified, specific food vehicles may become the focus of an investigation based on the pathogen implicated and past outbreaks linked to the pathogen.