Policy recommendation: latent tuberculosis infection screening and treatment in children in immigration detention.

Latent tuberculosis infection (LTBI) is a subclinical infection with Mycobacteria tuberculosis complex without any clinical, bacteriological or radiological evidence of manifest TB disease.1 LTBI results from contact with an infectious case of TB. It is characterised by the presence of mycobacterial T-cell responses, assessed by either the tuberculin skin test (TST) or more recently, interferon gamma release assays (IGRAs).2