Table 2.

Percentage of positive matches with RT-qPCR test results according to viral load in each sample.

Viral load (copies/mL)	Saliva		Np swab
	n	Positive saliva antigen test (positive rate, %)	n	Positive Np swab antigen test (positive rate, %)
≤103	3	0 (0.0)	1	0 (0.0)
103–104	2	1 (50.0)	1	1 (100)
104–105	12	2 (16.7)	7	6 (85.7)
105–106	18	16 (88.9)	8	7 (87.5)
106–107	21	21 (100)	13	12 (92.3)
107–108	3	3 (100)	20	20 (100)
108–109	2	2 (100)	10	10 (100)
Total	61	45	60	56