Household ventilation and tuberculosis transmission in Kampala, Uganda. To test the feasibility of measuring household ventilation and evaluate whether ventilation is associated with tuberculosis in household contacts in Kampala, Uganda. Adults with pulmonary TB and their household contacts received home visits to ascertain social and structural household characteristics. Ventilation was measured in air changes per hour in each room by raising CO₂ levels using dry ice, removing the dry ice, and measuring changes in the natural log of CO₂ over time. Ventilation was compared in homes with and without co-prevalent TB.
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