TABLE 1.

Conjugation frequency

Strain(s)aNo. of transconjugants per 108 donors
MeanSDSE
ST151 from cows (n = 14)b12,38510,507
Other animal isolates (n = 39)5962,096
Human isolates, including MRSA (n = 39)3257
Laboratory isolates
    8325-4146.8
    RN4220426199
    879R4RF1,770320
    B11112,750250
  • a All animal and laboratory isolates were tested in duplicate.

  • b Significantly different from other animal isolates (P < 0.001) and from human isolates (P < 0.001).