[The incidence of certain E. coli serotypes in urinary tract infections in childhood and their source].

E. coli strains isolated from urine and feces specimens of 100 children with urinary tract infection and, from feces specimens of 50 apparently healthy children, were typed by using antisera prepared against 01-02-04-06-07-09-011-018-039-075 serotypes which are commonly seen in urine. 67% of E. coli strains isolated from urine, 51% from feces of patients and 34% of control group were typed. Urinary type 075 was most commonly isolated strain of E. coli in our experiments. 29.4% of E. coli 0 serotypes were fitting as being isolated both from urine and feces of patients with urinary tract infection.