| Serotypes | Cconfirmed cases | % | Non-confirmed cases | % | Ssuspected cases | % |
| 1 | 1 | 4.3 | 7 | 5.5 | 8 | 5.3 |
| 3 | 0 | 0.0 | 1 | 0.8 | 1 | 0.7 |
| 4 | 0 | 0.0 | 1 | 0.8 | 1 | 0.7 |
| 5 | 1 | 4.3 | 5 | 3.9 | 6 | 3.9 |
| 7F | 0 | 0.0 | 1 | 0.8 | 1 | 0.7 |
| 8 | 1 | 4.3 | 0 | 0.0 | 1 | 0.7 |
| 9V | 1 | 4.3 | 0 | 0.0 | 1 | 0.7 |
| 9V/9A | 0 | 0.0 | 1 | 0.8 | 1 | 0.7 |
| 9N/9L | 0 | 0/0 | 3 | 2.3 | 3 | 1.9 |
| 14 | 0 | 0.0 | 4 | 3.1 | 4 | 2.6 |
| 18C | 0 | 0.0 | 2 | 1.6 | 2 | 1.3 |
| 19A | 0 | 0.0 | 2 | 1.6 | 2 | 1.3 |
| 23F | 1 | 4.3 | 5 | 3.9 | 6 | 3.9 |
| 33F | 0 | 0.0 | 1 | 0.8 | 1 | 0.7 |
| Non-typed* | 7 | 30.4 | 43 | 33.6 | 50 | 33.1 |
| Non-typable** | 11 | 47.8 | 52 | 40.6 | 63 | 41.7 |
| Total | 23 | 100 | 128 | 100 | 151 | 100 |