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| Methods | Randomization by family unit. | |
| Participants | 25,033 household contacts of newly diagnosed reported tuberculosis. 2/3 under 20 years old. |
|
| Interventions | Isoniazid 300 mg/kg or 5 mg/kg for one year. | |
| Outcomes | 1. Active tuberculosis 2. Extrapulmonary tuberculosis 3. Death | |
| Notes | — | |
