A Survey of Microbial Contamination on Restaurant Nonfood‐Contact Surfaces

Abstract

AbstractFoodborne illnesses are a significant public health concern as they cause approximately 48 million illnesses per year in the U.S.A. It is important to identify and control potential sources of microbial contamination in restaurants to reduce the number of foodborne illnesses. In this study, we aimed to measure microbial contamination on nonfood‐contact surfaces in restaurants. These surfaces include tables, chairs, highchairs and booster seats. We found the highest levels of total microbial contamination and staphylococci on booth seats and table chairs with total microbial counts of 151 and 184 CFU/100 cm2, respectively. Other surfaces found to have over 100 CFU/100 cm2 were booster seats and cleaning dishcloths. The cleaning dishcloth also contained 59 CFU/100 cm2 of enteric bacteria. These results suggest the need for more studies aimed to determine the levels of microbial contamination on nonfood‐contact surfaces in restaurants with the goal of providing better recommendations for cleaning practices and procedures.Practical ApplicationsThe cleaning procedures for restaurant furniture and other nonfood‐contact surfaces in restaurants are not highly regulated. The information from this study suggests the need for improved cleaning practices and procedures of nonfood‐contact surfaces in restaurants. Development and implementation of better guidelines for cleaning has the potential to reduce microbial burden on these surfaces and therefore reduce the risk of foodborne illness.