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Serogroup/serotype distribution of the most frequent pneumococci causing invasive diseases in children vs. adult patients in Riyadh.*
| Serogroup/serotype | No. children (<15 yrs) | No. adults (≥15 yrs) | Not known | Total |
|---|---|---|---|---|
| 19 | 4 | 6 | 2 | 12 |
| 6 | 10 | 1 | 1 | 12 |
| 15 | 5 | 3 | – | 8 |
| 1 | 4 | 4 | – | 8 |
| 23 | 6 | 0 | – | 6 |
| 14 | 5 | 0 | 1 | 6 |
| 3 | 2 | 1 | – | 3 |
| 18 | 3 | 0 | – | 3 |
| 7 | 2 | 0 | 1 | 3 |
| 4 | 2 | 0 | – | 2 |
| 22 | 0 | 2 | 1 | 3 |
χ2=21.336; P value = 0.0189 for the difference between children and adults.
