Isolation of Methicillin-resistant Staphylococcus aureus (MRSA) at the Niigata University Hospital(Management of Nosocomial Infection)

We investigated coagulase types and susceptibility against antimicrobial agents of Methicillin-resistant Staphylococcus aureus (MRSA) isolated from clinical material at the Niigata University Hospital. MRSA from the inpatient increased from 1.9% in 1981 to 70.8% in 1987. MRSA from the outpatient inceased from 1.6% to 27.8% during these periods, too. From January to June in 1988, MRSA were frequently isolated from pus and sputum of the inpatient. The coagulase type of most strains of MRSA classified into type II and type IV. Many strains of MRSA were resistant to PCG, MCIPC, ABPC, CEZ, CMZ, FMOX, IPM, GM, AMK, EM, CLDM, OFLX and MINO. Of 27 medical staffs at internal medicine, MRSA was isolated from the nose of one staff