Data subset,Raw prevalence (severe),Null accuracy,Accuracy (95% CI),Sensitivity,Specificity,NPV,TSS,AUC Excluding viruses only known to infect humans from serological evidence (n = 36),0.348,0.652,"0.862 (0.682, 0.953)",0.778,0.907,0.887,0.684,0.953 Excluding viruses with < 20 recognised human infections (n = 55),0.211,0.789,"0.871 (0.692, 0.958)",0.686,0.92,0.92,0.606,0.948 Excluding viruses with poor data quality in at least one predictor (n = 71),0.389,0.611,"0.863 (0.683, 0.954)",0.798,0.905,0.882,0.703,0.965