IFNG and leprosy: Since one of the aims of this study was to develop field-friendly test that is world-wide applicable, IFN-γ production in response to a mix of these peptides was analyzed in a 24-hour WBA [20] using 34 healthy controls from areas in Ethiopia with different leprosy prevalence (Figure 4; EClow:  n = 16; EChigh:  n = 18).