Appendix 1—table 3. Relative Risk of Infection .
| Age range (Years) |
Relative risk |
|---|---|
| 0–1 | 1.0 |
| 1–2 | 1.8 |
| 2–3 | 2.3 |
| 3–4 | 1.5 |
| 4+ | 1.3 |
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