[Incidence of isolation and antibiotic resistance of E. coli responsible for urinary infections outside hospitals, in specialized hospitals and in general hospitals]. / Fréquences d'isolement et résistance aux antibiotiques des E. coli responsables d'infections urinaires en ville, en centre hospitalier spécialisé et centre hospitalier général.

E. coli is the agent most frequently isolated in urinary infection. In 1982, rates of E. coli isolation were 87% in outpatient laboratories, 63% in general hospitals and 41% in specialized hospitals. Susceptibility to ampicillin was less frequent in outpatients (43%) than in hospitalized patients (67%). In both, isolated strains were susceptible to the major urinary antiseptics ( furans , nalidixic acid, pipemidic acid) and even more so to aminoglycosides. Resistance to beta-lactams was compared in outpatients (1981) and general hospital patients (1982):TEM plasmid resistance was found in 72% and 57% of strains respectively. Resistance to quinolones was unremarkable for all strains studied except for one NALs PIPr phenotype strain recovered from an outpatient.

[Frequency of isolation and antibiotic sensitivity of strains of coli bacilli from urinary tract infections isolated in private laboratories]. / Fréquence d'isolement et sensibilité aux antibiotiques des souches de colibacilles isolées en laboratoire de ville au cours d'infections urinaires.

Frequency of isolation and antibiotic susceptibility of E. coli strains isolated from urinary tract infections in private laboratory. The urinary tract infections are not the most frequent infections in man. However cytobacteriological analysis are often required for the diagnosis. The critical evaluation of 3000 analysis brings the followed conclusions: 1) 16% of the analysis correspond to a urinary tract infection; 2) the most frequently isolated germs are E. coli (65%) and Proteus mirabilis (11%); 3) E. coli is always very susceptible to antibiotics especially aminosides (100%) polymyxine E (92%), cotrimoxazole (91%) and quinolones (90%); 4) hospital bacteria can be found with a low frequency. However, in our study, Staphylococcus aureus has been isolated in 6% of the cases. This seems to be in relation with the passage of patients in an obstetric clinic.