Table 1.

Test results and analysis of nasopharyngeal swab specimens with Ct values of PCR positivity less than 25.

n	Nasopharyngeal Swab Specimen
	Positive (PCR < 25)	PCR Negative	Total
AT Positive	70	1	71
AT Negative	0	243	243
Total	70	244	314
Sensitivity	100.00%
95% CI	98.79–100.00%
Specificity	99.59%
95% CI	98.07–99.91%
Accuracy	99.68%

AT: antigen test; CI: confidence interval.