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https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3223236/
While we have known for some time that human-associated bacteria can be readily cultivated from both domestic and public restroom surfaces, little was known about the overall composition of microbial communities associated with public restrooms or the degree to which microbes can be distributed throughout this environment by human activity. The results presented here demonstrate that human-associated bacteria dominate most public restroom surfaces and that distinct patterns of dispersal and community sources can be recognized for microbes associated with these surfaces. Although the methods used here did not provide the degree of phylogenetic resolution to directly identify likely pathogens, the prevalence of gut and skin-associated bacteria throughout the restrooms we surveyed is concerning since enteropathogens or pathogens commonly found on skin (e.g. Staphylococcus aureus) could readily be transmitted between individuals by the touching of restroom surfaces.
