[Antibiotic sensitivity of Staph. aureus strains isolated from the upper respiratory tracts of healthy carriers].

Sensitivity of 1004 cultures of Staph. aureus isolated from the upper respiratory tracts of the staff of a maternity hospital was studied by the method of serial dilutions in agar with respect to 11 antibiotics. It was found that 61.9, 39.5 and 16.5 per cent of the isolates were resistant to benzylpenicillin, tetracycline and levomycetin respectively. Most of the cultures were sensitive to streptomycin and oleandomycin. The cultures of Staph. aureus isolated from the staff were sensitive to low doses of kanamycin, oxacillin and lincomycin. Most of the isolates were inhibited only by high doses of methicillin, ampicillin, ristomycin and cephaloridin.