IL6 and infection: Remarkably, when levels of both these analytes were expressed as a sMIL ratio (sMAdCAM/IL-6), we observed (Figure 3) a clear delineation of in-patient and convalescent data into discrete categories based on disease progression (Figures 3A, B), gender (Figure 3C), time from infection (Figure 3D), and intriguingly serological status (Figure 3E).