A novel community-acquired MRSA clone, USA300-LV/J, uniquely evolved in Japan

摘要

Background: USA300 [ST8-staphylococcal cassette chromosome mec type IVa (ST8-IVa)/arginine catabolic mobile element (ACME) positive] is a major Panton-Valentine Leucocidin (PVL)-positive community-acquired MRSA (CA-MRSA) clone. In Japan, we identified USA300-Like strains with characteristics (ST8-IVc/ACME negative) similar to those of USA300.