yersinia enterocolitica isolated from two cohorts of young children in santiago, chile: incidence of and lack of correlation between illness and proposed virulence factors. | yersinia enterocolitica was isolated from children in two cohorts in santiago, chile. in a cohort containing a cross section of children aged 0 to 4 years, y. enterocolitica was isolated from stool samples of 1.1% of children with diarrhea and 0.2% of age-matched control children. in a subgroup of this cohort from which weekly stool samples were obtained from all children irrespective of clinical status, 6% of children had asymptomatic yersinia infections. in a birth cohort (with a greater repre ... | 1991 | 1757549 |