Fig. 1From: Improving natural ventilation in hospital waiting and consulting rooms to reduce nosocomial tuberculosis transmission risk in a low resource settingSchematics are shown of the six rooms in the study, with the modification to improve natural ventilation annotated. Room ventilation (air-changes/hour; ACH) is shown alongside as measured pre- and post-modification. The following 6 rooms are shown: 1. General medical out-patients waiting room. 2. General medical out-patients consulting room. 3. X-ray department waiting room. 4. Respiratory medicine & TB clinic waiting room. 5. Respiratory medicine out-patients consulting room. 6. General medical and respiratory medicine out-patients waiting roomBack to article page