Fig. 2

Estimated mean number of other people present, ventilation rate, and relative rate of potential transmission by building/transport type. Each point represents a single period of data collection in a building or vehicle, and shows the mean number of other people present, and the mean and 95% confidence intervals for the ventilation rates. For minibus taxis, the estimates are shown separately for peak times, defined as 04:30–09:30 and then 16:30–18-30, and off-peak at all other times. *To each person present, relative to the median rate of potential transmission across locations/transport, assuming the same prevalence of infectious tuberculosis in the other people present in the location/transport. **Note the different x-axis and y-axis scales