Brenda Coleman is an epidemiologist and assistant professor at U of Toronto and determined that people who ingest water contaminated with antimicrobial resistant E. coli are significantly more likely to carry it in their gut (PhD thesis). She is a principal or co-investigator on a number of grants and many publications regarding antimicrobial resistance, most recently regarding the prevalence and risk factors for carriage of carbapenemase resistant Enterobacteriaceae in humans and its prevalence in hospital sinks, hospital and home environments, and in treated and untreated sewage. She will be involved in aim 2a.