Table 3:

Demographic and risk characteristics of San Francisco HIV/AIDS registry cases who contributed viral sequences from 2000 to 2016, by subtype/circulating recombinant form (CRF).

Subtype/CRF
Characteristic	Only B n (%)	A1 n (%)	C n (%)	D n (%)	G n (%)	CRF01_AE n (%)	CRF02_AG n (%)	CRF07_BC n (%)	Other CRF n (%)	Total non-B n (%)	Total n (%)
Sex at Birth
Female	634 (9.0)	4 (44.4)	14 (42.4)	2 (50.0)	3 (60.0)	2 (3.7)	5 (29.4)	3 (30.0)	1 (11.1)	34 (24.1)	668 (9.3)
Male	6,382 (91.0)	5 (55.6)	19 (57.6)	2 (50.0)	2 (40.0)	52 (96.3)	12 (70.6)	7 (70.0)	8 (88.9)	107 (75.9)	6,489 (90.7)
Race/Ethnicity
Asian/Pacific Islander	337 (4.8)	4 (44.4)	9 (27.3)	2 (50.0)	0 (0.0)	33 (61.1)	3 (17.6)	10 (100.0)	1 (11.1)	62 (44.0)	399 (5.6)
Black, not Hispanic	1,432 (20.4)	1 (11.1)	14 (42.4)	1 (25.0)	4 (80.0)	2 (3.7)	9 (52.9)	0 (0.0)	1 (11.1)	32 (22.7)	1,464 (20.5)
Hispanic	1,593 (22.7)	1 (11.1)	2 (6.1)	0 (0.0)	0 (0.0)	5 (9.3)	0 (0.0)	0 (0.0)	1 (11.1)	9 (6.4)	1,602 (22.4)
White, not Hispanic	3,333 (47.5)	3 (33.3)	7 (21.2)	0 (0.0)	1 (20.0)	12 (22.2)	4 (23.5)	0 (0.0)	5 (55.6)	32 (22.7)	3,365 (47.0)
Other/Unknown	321 (4.6)	0 (0.0)	1 (3.0)	1 (25.0)	0 (0.0)	2 (3.7)	1 (5.9)	0 (0.0)	1 (11.1)	6 (4.3)	327 (4.6)
Country of Birth
USA	5,446 (77.6)	3 (33.3)	7 (21.2)	1 (25.0)	4 (80.0)	14 (25.9)	8 (47.1)	1 (10.0)	3 (33.3)	41 (29.1)	5,487 (76.7)
Non-USA	1,032 (14.7)	6 (66.7)	22 (66.7)	3 (75.0)	1 (20.0)	31 (57.4)	6 (35.3)	9 (90.0)	4 (44.4)	82 (58.2)	1,114 (15.6)
Unknown	538 (7.7)	0 (0.0)	4 (12.1)	0 (0.0)	0 (0.0)	9 (16.7)	3 (17.6)	0 (0.0)	2 (22.2)	18 (12.8)	556 (7.8)
Transmission Risk
Heterosexual sex	342 (4.9)	5 (55.6)	13 (39.4)	1 (25.0)	2 (40.0)	7 (13.0)	4 (23.5)	5 (50.0)	1 (11.1)	38 (27.0)	380 (5.3)
Injection drug use	813 (11.6)	0 (0.0)	3 (9.1)	0 (0.0)	2 (40.0)	2 (3.7)	3 (17.6)	1 (10.0)	0 (0.0)	11 (7.8)	824 (11.5)
Male sex with men	4,058 (57.8)	4 (44.4)	9 (27.3)	1 (25.0)	1 (20.0)	42 (77.8)	8 (47.1)	3 (30.0)	8 (88.9)	76 (53.9)	4,134 (57.8)
Both injection drug use & male sex with men	1,690 (24.1)	0 (0.0)	2 (6.1)	1 (25.0)	0 (0.0)	2 (3.7)	1 (5.9)	0 (0.0)	0 (0.0)	6 (4.3)	1,696 (23.7)
Other/unknown	113 (1.6)	0 (0.0)	6 (18.2)	1 (25.0)	0 (0.0)	1 (1.9)	1 (5.9)	1 (10.0)	0 (0.0)	10 (7.1)	123 (1.7)
Age at HIV Diagnosis
Under 25 years old	1,010 (14.4)	4 (44.4)	2 (6.1)	2 (50.0)	0 (0.0)	11 (20.4)	4 (23.5)	1 (10.0)	2 (22.2)	26 (18.4)	1,036 (14.5)
25-29 years old	1,316 (18.8)	2 (22.2)	6 (18.2)	0 (0.0)	1 (20.0)	12 (22.2)	4 (23.5)	0 (0.0)	1 (11.1)	26 (18.4)	1,342 (18.8)
30-39 years old	2,731 (38.9)	0 (0.0)	8 (24.2)	2 (50.0)	0 (0.0)	12 (22.2)	4 (23.5)	4 (40.0)	5 (55.6)	35 (24.8)	2,766 (38.6)
40-49 years old	1,488 (21.2)	2 (22.2)	12 (36.4)	0 (0.0)	4 (80.0)	14 (25.9)	4 (23.5)	3 (30.0)	0 (0.0)	39 (27.7)	1,527 (21.3)
50 years old or older	469 (6.7)	1 (11.1)	4 (12.1)	0 (0.0)	0 (0.0)	5 (9.3)	1 (5.9)	2 (20.0)	1 (11.1)	14 (9.9)	483 (6.7)
Unknown	2 (0.0)	0 (0.0)	1 (3.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	1 (0.7)	3 (0.0)
Year of HIV Diagnosis
Before 1990	447 (6.4)	0 (0.0)	1 (3.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	1 (0.7)	448 (6.3)
1990-1999	2,192 (31.2)	0 (0.0)	2 (6.1)	0 (0.0)	2 (40.0)	2 (3.7)	0 (0.0)	0 (0.0)	0 (0.0)	6 (4.3)	2,198 (30.7)
2000-2009	2,813 (40.1)	4 (44.4)	13 (39.4)	2 (50.0)	2 (40.0)	11 (20.4)	6 (35.3)	2 (20.0)	1 (11.1)	41 (29.1)	2,854 (39.9)
2010-2016	1,564 (22.3)	5 (55.6)	17 (51.5)	2 (50.0)	1 (20.0)	41 (75.9)	11 (64.7)	8 (80.0)	8 (88.9)	93 (66.0)	1,657 (23.2)
TOTAL	7,016 (100.0)	9 (100.0)	33 (100.0)	4 (100.0)	5 (100.0)	54 (100.0)	17 (100.0)	10 (100.0)	9 (100.0)	141 (100.0)	7,157 (100.0)