(A) The genetic environment of blaKPC-2 is similar in isolates 2C1, 3C1, 3C2, 3C9, 3C17, 3C18, 3C29 and 4C5. (B)The isolates 3C3, 3C23 and 3C25 all carry blaKPC-2 and share the identical genetic environment surrounding the same gene. (C) The isolate 3C21 and the isolate 4C2 havethe same genetic environment. (D) The genetic environment of the isolate 3C11 carrying the blaKPC-2 gene.