Table 1.

HIV-1 prevalence and incidence from sentinel surveillance

Population	Year	The number of subjects	The number of HIV antibody-positive subjects	Prevalence rate (%,95%CI)	The number of previously reported cases	The number of samples tested with BED-CEIA	The number of recently infected individuals	Estimated HIV incidence rate (%,95%CI)
PWID	2001	1344	365	27.16 (24.37 ~ 29.94)	0	345	72	11.68 (9.06 ~ 14.30)
	2002	1651	379	22.96 (20.64 ~ 25.27)	0	378	100	12.96 (10.42 ~ 15.50)
	2003	2212	475	21.47 (19.54 ~ 23.40)	9	464	52	2.74 (1.99 ~ 3.48)
	2004	2331	531	22.78 (20.84 ~ 24.72)	12	517	76	5.23 (4.06 ~ 6.40)
	2005	3008	561	18.65 (17.11 ~ 20.19)	33	503	55	2.07 (1.54 ~ 2.60)
	2006	2338	491	21.00 (19.14 ~ 22.86)	171	284	32	1.80 (1.21 ~ 2.39)
	2007	2416	571	23.63 (21.70 ~ 25.57)	223	331	39	2.18 (1.52 ~ 2.85)
	2008	2691	563	20.92 (19.19 ~ 22.65)	162	338	38	1.94 (1.38 ~ 2.51)
	2009	4626	1314	28.40 (26.87 ~ 29.94)	717	586	66	1.87 (1.42 ~ 2.32)
	2010	3037	633	20.84 (19.22 ~ 22.47)	318	307	38	1.70 (1.17 ~ 2.24)
Male STD clinic attendees	2001	3922	142	3.62 (3.03 ~ 4.22)	0	140	27	1.10 (0.69 ~ 1.52)
	2002	5222	122	2.34 (1.92 ~ 2.75)	0	120	27	0.88 (0.55 ~ 1.22)
	2003	5419	135	2.49 (2.07 ~ 2.91)	0	123	18	0.47 (0.26 ~ 0.68)
	2004	5627	113	2.01 (1.64 ~ 2.38)	3	101	18	0.52 (0.29 ~ 0.75)
	2005	5611	89	1.59 (1.26 ~ 1.92)	0	85	15	0.41 (0.21 ~ 0.62)
	2006	5636	88	1.56 (1.24 ~ 1.89)	0	60	10	0.37 (0.18 ~ 0.56)
	2007	4989	83	1.66 (1.31 ~ 2.02)	5	76	10	0.24 (0.09 ~ 0.38)
	2008	4956	67	1.35 (1.03 ~ 1.68)	5	55	8	0.23 (0.08 ~ 0.38)
	2009	3731	50	1.34 (0.97 ~ 1.71)	23	26	8	0.42 (0.13 ~ 0.70)
	2010	3012	52	1.73 (1.26 ~ 2.20)	19	32	7	0.40 (0.11 ~ 0.69)
FSWs	2007	11775	290	2.46 (2.18 ~ 2.75)	21	255	50	0.71 (0.52 ~ 0.90)
	2008	11604	226	1.95 (1.69 ~ 2.20)	12	202	32	0.40 (0.27 ~ 0.54)
	2009	12465	276	2.21 (1.95 ~ 2.48)	125	140	25	0.32 (0.20 ~ 0.44)
	2010	9760	217	2.22 (1.93 ~ 2.52)	105	112	20	0.31 (0.17 ~ 0.44)
MSM	2008	450	53	11.78 (8.61 ~ 14.95)	0	53	14	6.01 (2.86 ~ 9.16)
	2009	467	44	9.42 (6.64 ~ 12.21)	2	42	15	6.58 (3.25 ~ 9.90)
	2010	694	71	10.23 (7.85 ~ 12.61)	12	59	27	8.38 (5.22 ~ 11.54)
Pregnant women	2001-2002	20032	60	0.30 (0.22 ~ 0.38)	0	53	10	0.09 (0.04 ~ 0.14)
	2003-2004	23254	102	0.44 (0.35 ~ 0.52)	1	94	15	0.09 (0.05 ~ 0.14)
	2005-2006	23795	102	0.43 (0.35 ~ 0.51)	0	87	13	0.08 (0.04 ~ 0.12)
	2007-2008	26010	108	0.42 (0.34 ~ 0.49)	1	98	15	0.08 (0.04 ~ 0.12)
	2009-2010	17032	59	0.35 (0.26 ~ 0.43)	12	41	12	0.15 (0.07 ~ 0.22)