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Serotype distribution according to ethnicity and age groups
| Category | Serotypes (%) |
|---|---|
| Ethnicity | |
| Melanesians | 1, 23F, 12F, 19F, 19A (55) |
| Tahitians/Wallisians | 1, 12F, 6B, 19F, 23F (57) |
| Europeans | 19F, 14, 4, 1, 23F (51) |
| Age group (invasive strains) | |
| Under 5 yr | 6, 23, 18, 4 (52) |
| Over 5 yr | 1, 12F, 23F, 4 (78) |
