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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 7.1 Influenza‐like illness | 1 | 1198 | Odds Ratio (M‐H, Random, 95% CI) | 0.52 [0.40, 0.68] |
| 7.1.1 Outbreak ‐ vaccine matching | 1 | 1198 | Odds Ratio (M‐H, Random, 95% CI) | 0.52 [0.40, 0.68] |
