TABLE 6.

Years of isolation and species of Enterobacteriaceae isolates which were able to transfer the plasmids of various incompatibility groups carrying armA or rmtB

Yr of isolation and speciesaNo. of strains that transfer a conjugative plasmid of the indicated Inc group carrying gene:
armArmtB
FIIAsHI2L/MA/CFNIbA/CFI1-Iγ
1997-1998
    E. coli3d1
    K. pneumoniae
    Others432
2001
    E. coli1
    K. pneumoniae16
    Others3
2002
    E. coli4e1g
    K. pneumoniae
    Others1
2003
    E. coli2
    K. pneumoniae1
    Others6
2004
    E. coli11121
    K. pneumoniae11210
    Others15
2005
    E. coli11154f41
    K. pneumoniae621130101
    Others21111
2006
    E. coli1622
    K. pneumoniae413c11415
    Others43
Total no. of strains20438c9d77543e, f7g1
  • a Others, Enterobactericeae isolates other than E. coli and K. pneumoniae, including 19 E. cloacae isolates, 6 Enterobacter species isolates, 6 S. marcescens isolates, 4 C. freundii isolates, 2 K. oxytoca isolates, and 1 M. morganii isolate.

  • b NI, not identified.

  • c One isolate was positive for L/M and F.

  • d Two isolates were positive for A/C and I1-Iγ.

  • e One isolate was positive for A/C and F.

  • f One isolate was positive for A/C, F, and FIA.

  • g One isolate was positive for F and Y.