Figure : Estimation of the population-attributable fraction of paediatric tuberculosis transmission due to exposure from the household^{15,16,18–23}.

We included studies with information available on the prevalence of exposure to tuberculosis within the household at the population level and the relative risk of tuberculosis infection in children exposed to a tuberculosis case in a household compared with children not exposed in the household. Molecular epidemiology, mathematical modelling studies, and studies in which all the components of the population-attributable fraction formula were not extractable are included in table 1, but not included here in this figure. The systematic review on tuberculin surveys includes ten studies^28–37 but is represented as a pooled value herein, as presented in Martinez and colleagues.¹⁸ We also include two data points for Khan and colleagues,¹⁶ 2018. The population-attributable fraction was taken from the Rockhill and colleagues.²⁷ *Uses any exposure at less than 200 m from the participant’s household (including household exposures) as the parameter. †Uses exposures that occurred only directly inside the participant’s household.