Annual Reports on Foodborne Illness Source Attribution Estimates

Foodborne Illness Source Attribution Estimates for Salmonella, Escherichia coli O157, and Listeria monocytogenes Using Multi-Year Outbreak Surveillance Data, United States

Suggested citation:

Interagency Food Safety Analytics Collaboration. Foodborne illness source attribution estimates for {Year} for Salmonella, Escherichia coli O157, and Listeria monocytogenes using multi-year outbreak surveillance data, United States. Atlanta, Georgia and Washington, District of Columbia: U.S. Department of Health and Human Services, CDC, FDA, USDA/FSIS. {Publication Year, example: 2023.}

About the Reports

These reports use outbreak data to produce annual estimates for foods responsible for foodborne illnesses caused by four pathogens. CDC estimates that, together, these four pathogens cause 1.9 million foodborne illnesses in the United States each year. The analysis uses a method developed by IFSAC to estimate foodborne illness source attribution, which is the process of estimating the degree to which specific foods and food categories are responsible for foodborne illnesses.

Latest Report for 2021

IFSAC analyzed data from 47,657 illnesses linked to 1,322 foodborne disease outbreaks that occurred from 1998 through 2021 and for which each confirmed or suspected implicated food was assigned to a single food category. The method relies most heavily on the last five years of outbreak data (2017 – 2021). Foods are categorized using a scheme IFSAC created that classifies foods into 17 categories that closely align with the U.S. food regulatory agencies’ classification needs.

Read the 2021 report [PDF – 16 pages]

Previous Reports

Read the 2020 report [PDF – 15 pages]

Read the 2019 report [PDF – 14 pages]

Read the 2018 report [PDF – 15 pages]

Read the 2017 report [PDF – 15 pages]

Read the 2016 report [PDF – 14 pages]

Read the 2015 report [PDF – 14 pages]

Read the 2014 report [PDF – 14 pages]

Read the 2013 report [PDF – 14 pages]

Read the 2012 report [PDF – 14 pages]