Table 1. Distribution of different Shigella spp. in China during 2008–2010 and 1991–2000.
| Serotype | 1991–2000* |
May 2008–December 2010 |
|
|---|---|---|---|
| No. (%) isolates | No. (%) isolates | ||
| S. flexneri | 8,082 (86.2) | 208 (76.2) | |
| 1a | 272 (2.9) | 9 (3.3) | |
| 1b | 325 (3.5) | 29 (10.6) | |
| 1c | 15 (0.2) | 0 | |
| 2a | 6,468 (69.0) | 64 (23.4) | |
| 2b | 152 (1.6) | 3 (1.1) | |
| 3a | 255 (2.7) | 0 | |
| 3b | 57 (0.6) | 0 | |
| 3c | 9 (0.1) | 0 | |
| 4 | 230 (2.5) | 0 | |
| 5 | 30 (0.3) | 1 (0.4) | |
| 6 | 73 (0.8) | 3 (1.1) | |
| x | 70 (0.7) | 5 (1.8) | |
| y | 126 (1.3) | 2 (0.7) | |
| X variant (−:7,8, E1037), indole-negative variety |
0 |
|
73 (26.7) |
|
S. flexneri serotype 2 variant (II:3,4,7,8) |
0 |
|
17 (6.2) |
|
S. flexneri untypeable variant (−:E1037) |
0 |
|
2 (0.7) |
|
S. sonnei
|
1,022 (10.9) |
|
56 (20.5) |
|
S. dysenteriae
|
132 (1.4) |
|
6 (2.2) |
| S. boydii | 139 (1.5) | 3 (1.1) |
*Data are from (1).