| [phenotypic characterization and distribution of yersinia in human and environmental samples]. | the distribution of species and phenotypes of yersinia isolated from environmental samples over an eight year period are compared to that of stool cultures obtained from patients of the same geographical location (zaragoza, spain). the number of samples and the percentage contamination were as follows: wastewater 362, 67.4%, freshwater 523, 13.4%, raw food 607, 24.5% and cooked food 1134, 7.9%. yersinia enterocolitica was isolated significantly more frequently than other species in wastewater, w ... | 1994 | 7946129 |