| molecular subtypes of campylobacter spp., salmonella enterica, and escherichia coli o157:h7 isolated from faecal and surface water samples in the oldman river watershed, alberta, canada. | campylobacter spp., salmonella enterica, and escherichia coli o157:h7 isolated from 898 faecal, 43 sewage, and 342 surface water samples from the oldman river were characterized using bacterial subtyping methods in order to investigate potential sources of contamination of the watershed. among these pathogens, campylobacter spp. were the most frequently isolated from faecal, sewage, and surface water samples (266/895, 11/43, and 91/342, respectively), followed by salmonella (67/898, 8/43, and 29 ... | 2011 | 20971491 |