Table 4.
Five Most Common Toxigenic Clostridium difficile Strains From Asymptomatic Carriers, Protocol A, and Protocol B
| Asymptomatic Carriers (n = 40) |
Protocol A (n = 74) |
Protocol B (n = 49) |
|||
|---|---|---|---|---|---|
| Straina | No. | Straina | No. | Straina | No. |
| 014/020*,*** | 14 (35%) | 027 | 23 (31%) | 027 | 8 (16%) |
| 012*,** | 10 (25%) | 106/174 | 9 (12%) | WU42 | 8 (16%) |
| 053* | 4 (10%) | 014/020 | 7 (9%) | 014/020 | 6 (12%) |
| 077 | 3 (8%) | 002 | 7 (9%) | 001 | 4 (8%) |
| 027*,*** | 1 (3%) | 005 | 4 (5%) | 106/174 | 3 (6%) |
a Strain name is the polymerase chain reaction ribotype. If the strain did not match to a ribotype, the Washington University (WU) strain number is provided. If unable to discriminate between different ribotypes, both ribotypes the strain matched to are provided.
* P ≤ .005, asymptomatic carriers compared with protocol A.
** P < .001, asymptomatic carriers compared with protocol B.
*** P ≤ .03, asymptomatic carriers compared with protocol B.