Additional analysis of the ability of single markers to discriminate between infection of any kind and no infection identified AUCs of 0.80 (95% CI 0.71–0.86) for CRP, 0.77 (95% CI 0.67–0.84) for PCT, 0.68 (95% CI 0.57–0.76) for neutrophils, 0.59 (95% CI 0.48–0.70) for MIF, 0.56 (95% CI 0.45–0.67) for sTREM-1 and 0.51 (95% CI 0.40–0.63) for suPAR. This evidence concerns the gene MIF and infection.