Table 1.
The serotype distribution of Shigella isolates during 2001–2008
| Serotype | 2001 (n = 19) | 2002 (n = 49) | 2003 (n = 144) | 2004 (n = 60) | 2005 (n = 80) | 2006 (n = 55) | 2007 (n = 56) | 2008 (n = 63) | Total (n = 526) |
|---|---|---|---|---|---|---|---|---|---|
| S. flexneri | 19 (100) | 49 (100) | 137 (95·1) | 51 (85) | 80 (100) | 42 (76·4) | 50 (89·3) | 58 (92·1) | 486 (92·4) |
| F1a | 1 (5·3) | 5 (10·2) | 8 (5·6) | 4 (6·7) | 12 (15) | 8 (14·5) | 10 (17·9) | 11 (17·5) | 59 (12·1) |
| F1b | 0 | 1 (2) | 6 (4·2) | 0 | 0 | 0 | 1 (1·8) | 0 | 8 (1·6) |
| F1c | 0 | 0 | 0 | 0 | 0 | 1 (1·8) | 0 | 0 | 1 (0·2) |
| F2a | 5 (26·3) | 15 (30·6) | 43 (29·9) | 6 (10) | 14 (17·5) | 11 (20) | 17 (30·3) | 19 (30·2) | 130 (26·7) |
| F2b | 0 | 1 (2) | 1 (0·7) | 5 (8·3) | 4 (5) | 7 (12·7) | 6 (10·7) | 6 (9·5) | 30 (6·2) |
| F2ab | 0 | 0 | 1 (0·7) | 0 | 4 (5) | 2 (3·6) | 0 | 2 (3·6) | 9 (1·9) |
| F3a | 8 (42·1) | 7 (14·3) | 0 | 0 | 0 | 0 | 0 | 0 | 15 (3·1) |
| F4 | 0 | 0 | 0 | 0 | 1 (1·3) | 2 (3·6) | 0 | 6 (5·5) | 9 (1·9) |
| F4c | 0 | 0 | 51 (35·4) | 11 (18·3) | 36 (45) | 4 (7·3) | 10 (17·9) | 9 (14·3) | 121 (24·9) |
| F5 | 0 | 2 (4·1) | 0 | 0 | 0 | 0 | 0 | 0 | 2 (0·4) |
| F5a | 0 | 1 (2) | 0 | 0 | 0 | 0 | 0 | 0 | 1 (0·2) |
| F5b | 4 (21·1) | 14 (28·6) | 1 (0·7) | 0 | 1 (1·3) | 0 | 0 | 0 | 20 (4·1) |
| F6a | 1 (5·3) | 0 | 0 | 0 | 0 | 1 (1·8) | 0 | 0 | 2 (0·4) |
| Fx | 0 | 3 (6·1) | 16 (11·1) | 20 (33·3) | 7 (8·8) | 5 (9·1) | 5 (8·9) | 4 (6·3) | 60 (12·3) |
| Fy | 0 | 0 | 10 (6·9) | 5 (8·3) | 1 (1·3) | 1 (1·8) | 1 (1·8) | 1 (1·6) | 19 (3·9) |
| S. sonnei | 0 | 0 | 7 (4·9) | 9 (15) | 0 | 13 (23·6) | 6 (10·7) | 5 (7·9) | 40 (7·6) |
Numbers within parentheses indicate percentage in the current year.