Table 5. Confusion matrix and performance estimates of the multiclass prediction model.

IST Classification	Blood Bank Confirmed Diagnosis				Performance Summary
	T. cruzi pos	HBV pos	HCV pos	WNV pos	aSens	bSpec	AUC
T. cruzi	77	3	1	2	93%	96%	0.98
HBV	3	79	12	2	82%	96%	0.96
HCV	0	3	55	2	92%	94%	0.95
WNV	8	3	3	82	85%	97%	0.97
Totals	88	88	71	88	Overall accuracy = 87%

^aSens, sensitivity

^bSpec, specificity