Fig. 1From: GeneXpert or chest-X-ray or tuberculin skin testing for household contact assessment (GXT): protocol for a cluster-randomized trialAlgorithm of strategy 1 (standard or control arm, based on 2018 WHO algorithm). CXR, chest X-ray; TST, tuberculin skin testing; TB, tuberculosis; LTBI, latent TB infection; Micro, microbiological tests according to NTP guidelinesBack to article page