TABLE 2.
PCR ribotypes of C. difficile isolates from 330 episodes of CDAD in Örebro County during 12 months
| PCR ribotypea | Serotype matchb | No. of episodes (% of isolates [n = 330])
|
||||||
|---|---|---|---|---|---|---|---|---|
| Primary
|
Recurrencesc | All | ||||||
| Hospital-associated
|
Community-acquired | All | ||||||
| Hospital onset | Community onset | All | ||||||
| Major types | ||||||||
| SE7 | 4 | 0 | 4 | 3 | 7 | 4 | 11 | |
| SE12 | A2 | 9 | 1 | 10 | 5 | 15 | 9 | 24 |
| SE16 | A | 5 | 3 | 8 | 3 | 11 | 1 | 12 |
| SE17 | C | 33 (21) | 9 (29) | 42 (22)f | 3 (6) | 45 (19) | 20 (22) | 65 (20) |
| SE20 | G | 9 | 3 | 12 | 3 | 15 | 8 | 23 |
| SE21 | H | 16 | 3 | 19 | 6 | 25 | 6 | 31 |
| SE21b | A8 | 18 | 1 | 19 | 3 | 22 | 3 | 25 |
| SE25 | 7 | 1 | 8 | 2 | 10 | 6 | 16 | |
| SE30 | 5 | 0 | 5 | 2 | 7 | 1 | 8 | |
| All (n = 9) | 106 (67) | 21 (68) | 127 (67) | 30 (59) | 157 (65) | 58 (65) | 215 (65) | |
| Minor types (n = 23)d | 44 | 7 | 51 | 14 | 65 | 28 | 93 | |
| Unique types (n = 21)e | 9 (6) | 3 (9) | 12 (6) | 7 (14) | 19 (8) | 3 (3) | 22 (6) | |
| All types (n = 53) | 159 (100) | 31 (100) | 190 (100) | 51 (100) | 241 (100) | 89 (100) | 330 (100)g | |
Current Swedish designations. Major types were each found in 7 to 65 episodes.
Identity between the PCR ribotype of a C. difficile serotype reference strain and that of a major SE type. The PCR ribotype of other major SE types was distinctly different from that of each of the 22 serotype reference strains tested (see Materials and Methods). None of the isolates belonged to the PCR ribotype known to be toxin A-B+.
Apparent relapse or apparent reinfection (see Table 5).
Each type found in two to six episodes.
Each type found in only one episode.
Value statistically different from the value in the next column at a P value of 0.008.
Isolates for typing were not available in 42 episodes.