Pediatric tuberculosis in which bacteriological confirmation is not obtained and at least 2 of the following conditions are present: Symptoms/signs suggestive of tuberculosis (as defined); Chest radiograph consistent with tuberculosis; Close tuberculosis exposure or immunologic evidence of M. tuberculosis infection; Positive response to tuberculosis treatment (requires documented positive clinical response on tuberculosis treatment—no time duration specified) – With M. tuberculosis infection; Immunological evidence of M. tuberculosis infection(TST and/or IGRA positive) – Without M. tuberculosis infection; No immunological evidence of M. tuberculosis infection. This term was developed for diagnostic research purposes.