[原著］Epidemiological Study of Staphylococcus aureus Isolated from Six Hospitals in Okinawa

概要

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The current status of coagulase types of Staphylococcus aureus in six major hospitals in Okinawa was investigated. Five hundred and thirteen strains of S. aureus isolated during the period from June to December 1992 were studied. The isolation rate for methicillin-resistant S. aureus (MRSA) ranged from 31%- 71.8% for the hospitals. Coagulase type II MRSA was the most prevalent isolate constituting 65.3% of the MRSA. This was followed by coagulase type III with 12.6%. Earlier studies in 1989 indicated 54% and 40% isolation rates for coagulase types II and III MRSA respectively. MRSA of all types, except VI, were isolated from all the hospitals, except hospital A which lacked type VIII. Coagulase type V MRSA were isolated only from hospitals A and E. Methicillin-sensitive S. aureus (MSSA) of all coagulase types were isolated in all the hospitals except A which lacked type I, VI, and VIII. The overall results show that coagulase type III MSSA is the most prevalent type of MSSA constituting over 25.4% of the MSSA isolates. The results indicate a shift toward a higher frequency of coagulase type II MRSA and MRSA as a whole in the hospitals studied.
琉球医学会の論文