TABLE 3.

Sensitivity results of three NS1 detection assays with acute-phase sera from patients with confirmed primary DENV1 infection at different times

Day after onset of symptoms	No. of serum samples	No. of samples positive by indicated ELISA (%)
		DENV1 NS1 ELISA	Group-specific NS1 ELISA	Panbio NS1 ELISA
1	12	12 (100)	12 (100)	12 (100)
2	9	9 (100)	9 (100)	9 (100)
3	20	20 (100)	20 (100)	20 (100)
4	23	21 (91.3)	22 (91.7)	21 (91.3)
5	33	31 (93.9)	33 (100)	32 (97.0)
6	35	34 (97.1)	34 (97.1)	33 (94.3)
7	21	20 (95.2)	20 (95.2)	20 (95.2)
Total	153	147 (96.1)	150 (98.0)	147 (96.1)