“…Both environmental and genetic factors and their interaction influence susceptibility to tuberculosis in humans (Casanova & Abel, 2002;Schurr, 2007), in laboratory animals such as rabbits and mice, and in domestic mammals (Barthel et al, 2000;Phillips et al, 2002;Di Pietrantonio & Schurr, 2005;Dannemberg, 2006). For example, in humans infected with M. tuberculosis, less than 10% of infections progress to clinical disease (Cole et al, 2004).…”