Summary of key immunological players in paediatric response to Mycobacterium tuberculosis, with hypothesized associations with risk and protection.
(Adapted from illustration ©Hugh Gifford 2010, first published in first published in Jones C, Whittaker E, Bamford A, Kampmann B. Immunology and pathogenesis of childhood TB. Paediatr Respir Rev 2011; 12:3–8.)