TABLE 4.

Clonal distribution of MSSA strains of major MRSA lineages according to efficiency of transformation with pYK20

Clonal complexStrainsa
Total no.No. with the following efficiency of transformation:
≤10−1110−10 to 10−810−7
CC94 (4)04 (4)0
CC127340
CC155 (1)4 (1)10
CC255 (2)23 (2)0
CC514 (1)22 (1)0
ST202 (2)1 (1)1 (1)0
ST59-2963300
ST972 (1)11 (1)0
ST1012011
ST145-102 (1)2 (1)00
Otherb14 (7)8 (6)5 (1)1
Total (%)50 (100)26c (52)22 (44)2 (4)
  • a Values in parentheses are numbers of β-lactamase-producing strains.

  • b Other singletons are ST6, -7, -17, -19, -49, -50, -55, -182, -248, -264, -266, -301, -517, and -529.

  • c One or more transformants were obtained at this low efficiency for nine strains.