The ST8-SCCmec IVl isolate, which was derived from a young dental patient (13y) in the present study, was PVL-negative and harbored sec, sep, tst-1 and spj, which was characteristic of the CA-MRSA/J clone that emerged in Japan in 2003 as a cause of skin infections among children [31]. This evidence concerns the gene CCDC6 and skin infection.