Shoe soles as a potential vector for pathogen transmission: A Systematic Review

Rashid T, VonVille H, Hasan I, Garey KW Journal of Applied Microbiology

Shoe soles are possible vectors for infectious diseases. Although studies have been performed to assess the prevalence of infectious pathogens on shoe soles and decontamination techniques, no systematic review has ever occurred. The aim of this study was to perform a systematic review of the literature to determine the prevalence of infectious agents on shoe bottoms and possible decontamination strategies. Three electronic bibliographic databases were searched using a pre-defined search strategy evaluating prevalence of infectious pathogens on shoe bottoms and decontamination strategies. Quality assessment was performed independently by two reviews with disagreements resolved by consensus. Thirteen studies were identified that supported the hypothesis that shoe soles are a vector for infectious pathogens. Methicillin-resistant Staphylococcus. aureus, Clostridium difficile, and multidrug-resistant Gram negative species among other pathogens were documented on shoe bottoms in the healthcare setting, in the community, and among food workers. Fifteen studies were identified that investigated decontamination strategies for shoe soles. A number of decontamination strategies have been studies of which none have been shown to be consistently successful at disinfecting shoe soles. In conclusion, a high prevalence of microbiologic pathogens was identified from shoe soles studied in the healthcare, community, and animal worker setting. An effective decontamination strategy for shoe soles was not identified. Studies are needed to assess the potential for contaminated shoes to contribute to the transmission of infectious pathogens.