Intekoital and foecal escherichia coli o-serotypes and its relationship to bacteriuria during pregnancy

ABSTRACT

Cultures from interoital swab, ectal swab and urine specimen elected from 130 patients who had a history of recurrent urinary tract infection. The intertal and rectal E. coli count increased significantly with the urinary count. The prognostic importance of the interoital swab cultures is shown during the follow up by the fact that 60% of the cases develop urinary tract infection when the original interiotal swab E. coli, while only 40% develop urinary tract infection when the initial interoital swab was negative. This difference is statistically significant. The infections were found to occur early in cases with initial E. coli, Patients who developed urinary tract infection were significantly older. There was a higher incidence of corrospondence between the urinary E. coli and the faecal and interoital E. coli strains in symptomatic cases than in asymptomatic bacteriuria indicating that the symptomatic urinary tract infections were not preceeded by asymptomatic bacteriuria. The most frequent E. coli O-group was 0-6. This suggests that E. coli 0-6 group is pathogenic for urinary tract. E. coli 0-6 showed corrospondence between urinary, interiotal and faecal isolates. The results suggest that the availability of E. coli in the vestibular and recte flora constitutes a permissive factor for ascending urinary tract infections to occur