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Menon 1978: percentage of wells with An. stephensi larvae in wells immediately before and after introduction of fish
| Intervention | Pre-intervention (percentage) | Follow-up (months) |
||
|---|---|---|---|---|
| 1 | 2 | 4 | ||
| Control | 7.7 | 8.0 | 8.6 | 9.6 |
| Intervention | 32.8 | 0.97 | 0.49 | 0.47 |
