Table 2.

HIV Western blot p31 non-reactive/reactive in the HIV-positive confirmation results from KDCA and 17 PIHEs laboratories, 2015–2017.

HIV confirmation sites	HIV results	WB p31(–)	WB p31(+)	Total
KDCA (Ag, Ab, WB, NAT, p24 neutralization)	NAT (+)	10	0	10
	NAT (+) and p24 Ag neutralization (+)	124	0	124
	p24 Ag neutralization (+)	92	0	92
	p24 Ag neutralization (+) and Ab (+)	83	9	92
	NAT (+) and p24 Ag neutralization (+) and Ab (+)	133	23	156
	NAT (+) and Ab (+)	149	144	293
	Ab (+)	126	94	220
	Total	717 (72.6%)	270 (27.4%)	987 (100%)
17 PIHEs (Ag, Ab, WB)	Ag (+) and Ab (+)	186	1076	1262
	Ab (+)	541	4463	5004
	Total	727 (11.6%)	5539 (88.4%)	6266 (100%)