Fig. 1
From: Tuberculosis exposure, infection and disease in children: a systematic diagnostic approach
Continuum of TB states and correlations with bacterial load and with radiological and clinical manifestations. CFU: colony-forming units; LED: light-emitting diode; LOD: limit of detection; mL: milliliter; NAAT: nucleic acid amplification test; RT-PCR: real-time polymerase chain reaction. Adapted from C.M. Perez-Velez. Diagnosis of Intrathoracic Tuberculosis in Children. In: Handbook of Child and Adolescent Tuberculosis (p. 149), J.R. Starke and P.R. Donald (Eds.), 2016, New York, NY: Oxford University Press. Copyright by Oxford University Press [15]. Adapted with permission