Table 1. Prevalence and capsular type distribution of pks colibactin gene cluster in clinical Klebsiella pneumoniae isolates stratified by specimen type.
| Capsular typea (n) | No. of isolates in each specimen group (no. of isolates pks positive) | Capsular type prevalenceb | pks prevalencec | |||
|---|---|---|---|---|---|---|
| Blood (n = 100) | Respiratory (n = 100) | Urine (n = 100) | Others (n = 100) | |||
| K1 (33) | 9 (6) | 10 (8) | 4 (4) | 10 (8) | 8.3 (33/400) | 78.8 (26/33) |
| K2 (45) | 12 (7) | 16 (6) | 7 (3) | 10 (3) | 11.3 (45/400) | 42.2 (19/45) |
| K5 (12) | 4 (0) | 6 (0) | 0 | 2 (0) | 3.0 (12/400) | 0 (0/12) |
| K20 (23) | 4 (3) | 10 (5) | 4 (1) | 5 (2) | 5.8 (23/400) | 47.8 (11/23) |
| K54 (20) | 5 (0) | 2 (0) | 8 (0) | 5 (0) | 5.0 (20/400) | 0 (0/20) |
| K57 (8) | 1 (0) | 6 (1) | 0 | 1 (0) | 2.0 (8/400) | 12.5 (1/8) |
| K62 (25) | 3 (0) | 7 (6) | 6 (1) | 9 (2) | 6.3 (25/400) | 36.0 (9/25) |
| Unknown (234)a | 64 (1) | 58 (0) | 43 (0) | 68 (0) | 0.4 (1/234) | |
aIn the 234 non-K1, K2, K5, K20, K54, K57, K62 isolates, capsular type analysis was carried out on the 1 pks-positive isolate but its capsular type could not be identified. bNumber of isolates with the capsular type/400 isolates studied. cNumber of isolates positive for pks/number of isolates within each capsular type.