Cross-Contamination on Atypical Surfaces and Venues in Food Service Environments

Cross-contamination of raw food to other surfaces, hands, and foods is a serious issue in food service. With individuals eating more meals away from home, contracting a foodborne illness from a food service establishment is an increasing concern. However, most studies have concentrated on hands or food contact surfaces and neglected atypical and unusual surfaces (surfaces that are not typically identified as a source of cross-contamination) and venues. This review was conducted to identify atypically cross-contaminated surfaces and atypical venues where cross-contamination could occur that have not been examined thoroughly in the literature. Most surfaces that could be at risk for cross-contamination are frequently touched, are rarely cleaned and sanitized, and can support the persistence and/or growth of foodborne pathogens. These surfaces include menus, spice and condiment containers, aprons and coveralls, mobile devices and tablets, and money. Venues that are explored, such as temporary events, mobile vendors, and markets, are usually limited in space or infrastructure, have low compliance with proper hand washing, and provide the opportunity for raw and ready-to-eat foods to come into contact with one another. These factors create an environment in which cross-contamination can occur and potentially impact food safety. A more comprehensive cleaning and sanitizing regime encompassing these surfaces and venues could help mitigate cross-contamination. This review highlights key surfaces and venues that have the potential to be cross-contaminated and have been underestimated or not fully investigated. These knowledge gaps indicate where further work is needed to fully understand the role of these surfaces and venues in cross-contamination and how it can be prevented. HIGHLIGHTS The role of atypical surfaces in cross-contamination is underestimated. Cross-contamination is not well characterized in atypical retail venues. Proper cleaning, sanitizing, and hand washing lowers the risk of cross-contamination. Further work on cross-contamination of atypical surfaces and venues is needed.

Automated summary

Cross-contamination of raw food to other surfaces, hands, and foods is a serious issue in food service. Proper cleaning, sanitizing, and hand washing lowers the risk of cross-contamination. Further work on cross-contamination of atypical surfaces and venues is needed to fully understand the role of these surfaces and venues in cross-contamination and how it can be prevented.