Table 1.

PCR ribotypes of C. difficile depicting type strain, number of isolates obtained to date, and in vitro toxin production

PCR ribotypeType strainProduction of toxin A/BNo. of isolatesCommenta
001R8366+/+846Serogroup G
002R8375+/+60Serogroup A2
003R8384+/+3
004R8386+/+1
005R8373+/+54
006R8268+/+11
007R8264+/+1
008 R10568 +/+2
009R8269−/−46Serogroup I
010R8270−/−110Most frequent commu-nity isolate
011R7619+/+4
012R6187+/+73
013R5252+/+12
014 R11446 +/+104Serogroup H
015R6685+/+76Serogroup G
016 R10424 +/+2
017R7404−/+32Serogroup F
018R6184+/+10Serogroup A8
019R8637+/+1
020 R10079 +/+84Serogroup H
021R8763+/+5Serogroup A1
022R4262+/+1
023R6928+/+43Weak toxin expression
024R6321+/+11
025R7276+/+2
026 R10118 +/+28Weak toxin expression
027 R12087 +/+1CD196 (binary toxin strain)
028R9300−/−1
029R8438+/+3
030 R11004 −/−8
031 R11631 −/−24Serogroup K
032R6598−/−2
033IS58−/−2Serogroup E6
034IS81+/+9Serogroup A5
035 R11812 −/−8
036CCUG20309−/+1Strain 8864
037R6641+/+1
038NCTC11206−/−19Serogroup C
039 R10738 −/−10Serogroup A10
040 R10917 −/−1
041 R10920 −/−1
042 R11817 +/+6
043NCTC11382+/+2
044 R10976 +/+2
045 R10842 +/+4
046 R10991 +/+4
047 R10541 −/+4
048 R10069 +/+3Weak toxin expression
049R6320+/+8
050R9414+/+9
051R9549−/−1
052R6155+/+1
053IS21+/+6Serogroup K
054IS22+/+15Serogroup A1
055 R11652 +/+3
056IS25+/+19
057IS27+/+5Serogroup K
058 R10456 +/+12Weak toxin expression
059R9304+/+1
060IS40−/−2Serogroup B
061 R12099 +/+1
062 R11382 +/+4
063IS47+/+2Serogroup A5
064IS48+/+2Serogroup A6
065IS49−/−2Serogroup A7
066IS51−/−4Serogroup A9
067IS52−/−4Serogroup A10
068IS56−/−1
069IS59−/−1
070R9367+/+2Serogroup K
071IS64−/−1Serogroup S1
072 R12095 +/+1Serogroup X
074IS72−/−1
075IS93+/+1Serogroup A1
076 R11548 +/+4Serogroup A8
077 R10955 +/+2
078R7605+/+13Weak toxin expression
079R7606−/−1
081R9764+/+9
082R7638−/−1
083 R10566 +/+1Serogroup S1
084R8768−/−6
085 R12098 −/−4Serogroup X
086R1880+/+3
087 R11840 +/+5
088 R10855 −/−2
089R8603−/−1
090 R10737 +/+1
091R8643−/−1
092 R10630 +/+4
093R8853+/+1
094 R10078 +/+4
095R8858+/+1
096R9759+/+2
097R8914+/+1
098R9116−/−2
099R7425−/−1
100 R12104 −/−2
101 R10836 +/+1
104R9180+/+1
106 R10459 +/+88
107R9313+/+1
110R7771−/+2
111 R10870 +/+1
112R8631−/−1
114 R11212 −/−1
115 R11244 +/+6Serogroup G
116 R11347 +/+1
117 R10071 +/+1
118 R11394 +/+1
119 R11805 −/−1
120 R11830 +/+1
121R9378−/−1
122R9385+/+1
123 R11907 −/−1
124 R11919 −/−1
  • a Reference where known has been made to Delmee serotype (6).