CRP and COVID-19: Although there is a limited number of risk scores available for predicting hospitalization or death among patients with COVID-19, the SARS2 models presented here are on par with the c-statistics of more comprehensive models that for example predict mortality in the largest available COVID-19 cohort (average AUC of 0.77)12, or the 4C mortality score29 that in addition to demographic variables uses biomarkers (e.g. urea and C-reactive protein) and in-hospital measurements (e.g. respiratory and peripheral SO2) that resulted in an AUC of 0.77.