PHENOTYPICAL CHARACTERISTICS OF VARIOUS N OSOCOMIAL BACTERIAL STRAINSISOLATED IN THE GYNECOLOGY-OBSTETRICS CLINIC AT THE NATIONAL-HOSPITAL-OF-DAKAR

A study on nosocomial infections was conducted in the Laboratory of Ba cteriology-Virology of Aristide Le Dantec's Hospital, in collaboration with the Gynecology Obstetrics' clinic located both in the same Dakar 's hospital, during May 1995. The aim of the study was to define the p henotypical characteristics of various bacterial strains isolated from the atmosphere, health care staffs hands, medical equipment (material , antiseptics) and patients (hospitalized pregnant and newborns in day Nursery). A total of 133 strains were collected and the most frequent isolates were Staphylococcus aureus (27 strains) and Klebsiella pneum oniae (10 strains) encountered mainly in the atmosphere. Otherwise, Es cherichia coli (11 stains) and Enterococcus faecalis (11 strains) were more present in hospitalized patients. Results obtained after antimic robial agents susceptibility (Antibiotics and Heavy metal salts) by An tibiogramm and Minimal inhibitory concentrations (MIC) and also data f rom biotyping of Klebsiella strains have allowed Its to say there's a probable contamination of hospitalised patients by rite bacteria from the atmosphere but manuportage too.