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Distribution of genes encoding pilus islands across serotypes
| Serotype | No. of isolates by PIa |
Total no. of isolates | |||
|---|---|---|---|---|---|
| PI-1 and PI-2a | PI-1 and PI-2b | PI-2a | PI-2b | ||
| Ia | 11 | 4 | 211 | 2 | 228 |
| Ib | 51 | 0 | 3 | 0 | 54 |
| II | 104 | 0 | 8 | 0 | 112 |
| III | 102 | 168 | 4 | 0 | 274 |
| IV | 11 | 5 | 0 | 1 | 17 |
| V | 119 | 3 | 21 | 1 | 144 |
| VI | 0 | 0 | 1 | 0 | 1 |
| VII | 1 | 0 | 2 | 0 | 3 |
| NTb | 39 | 6 | 19 | 1 | 65 |
| Total | 438 | 186 | 269 | 5 | 898 |
The PI combination including more than half of the isolates in serotypes including more than 10 isolates are indicated in bold.
NT, nontypeable.
