CXCL8 and bacterial infectious disease: Contrasting these findings, Miedema et al. (2010) [20] reported that IL-8 concentrations ≥60 ng/L achieved 92% sensitivity for identifying bacterial infections in febrile neutropenic episodes, with median IL-8 levels significantly higher in infected patients (318.5 ng/L) compared to non-infected controls (55 ng/L; p = 0.002).