Table 2.
Evaluation of the DNase activity by qualitative and semi-quantitative assays among S. agalactiae of human origin (ST = sequence type; CC = clonal complex)
| Strains with DNase activity (frequency) | ||
|---|---|---|
| [STs (frequency)] | ||
| CCs (frequency) | ||
| Capsular type | Colonization | Invasive infection |
| Ia | 100% (20/20) | 100% (20/20) |
| [ST23 (17/20); ST144 (2/20); ST24 (1/20)] | [ST23 (19/20); ST24 (1/20)] | |
| CC23 (20/20) | CC23 (20/20) | |
| Ib | 100% (10/10) | 100% (10/10) |
| [ST8 (5/10); ST12 (2/10); ST1 (1/10); ST10 (1/10); ST563 (1/10)] | [ST10 (5/10); ST8 (4/10); ST12 (1/10)] | |
| CC1 (2/10); CC12 (8/10) | CC12 (10/10) | |
| II | 82% (32/39) | 88% (15/17) |
| [ST 28 (10/32); ST12 (8/32); ST44 (4/32); ST10 (3/32); ST2 (2/32); ST43 (1/32); ST154 (1/32); ST249 (1/32); ST347 (1/32); ST 472 (1/32)] | [ST 12 (5/15); ST28 (4/15); ST19 (3/15); ST10 (1/15); ST22a (1/15); ST42 (1/15)] | |
| CC19 (17/32); CC12 (12/32); CC1 (2/32); CC23 (1/32) | CC19 (8/15); CC12 (6/15) | |
| III-1 | 48% (14/29) | 59% (17/29) |
| [ST19 (8/14); ST27 (2/14); ST106 (2/14); ST286 (1/14); ST369 (1/14)] | [ST19 (17/29)] | |
| CC19 (14/14) | CC19 (17/17) | |
| III-2 | 100% (29/29) | 100% (29/29) |
| [ST17 (28/29); ST287 (1/29)] | [ST17 (29/29)] | |
| CC17 (29/29) | CC17 (29/29) | |
| IV | 100% (10/10) | 100% (3/3) |
| [ST196 (3/10); ST1 (1/10); ST2 (2/10); ST3 (1/10); ST162 (1/10); ST23 (1/10); ST10 (1/10)] | [ST66 (1/3); ST8 (1/10); ST23 (1/10)] | |
| CC1 (7/10); CC23 (2/10); CC12 (1/10) | CC1 (1/3); CC23 (1/3); CC12 (1/3) | |
| V | 90% (18/20) | 90% (18/20) |
| [ST1 (5/18); ST2 (13/18)] | [ST1 (15/18); ST2 (1/18); ST23 2/18)] | |
| CC1 (18/18) | CC1 (16/18); CC23 (2/18) | |
aSingleton ST.