Table 1. HIV-1 genotype distribution among MSM in China based on pol gene phylogenies.
| Study site |
Year of survey | N | CRF01_AE |
CRF07_BC |
B |
CRF55_01B | Other CRFs and URFs | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Region | Province | n | MSM cluster 1 | MSM cluster 2 | Other | n | MSM Cluster 3 | Other | n | B | B′ | ||||
| Northeastern | Liaoning (LN) | 2008–2012 | 263 | 213 | 43 | 165 | 5 | 15 | 10 | 5 | 28 | 26 | 2 | 0 | 7 |
| (100) | (80.9) | (16.3) | (62.7) | (1.9) | (5.7) | (3.8) | (1.9) | (10.6) | (9.9) | (0.7) | (0.0) | (2.8) | |||
| Northern | Beijing (BJ) | 2008–2011 | 163 | 81 | 57 | 24 | 0 | 30 | 28 | 2 | 51 | 50 | 1 | 0 | 1 |
| (100) | (49.7) | (35) | (14.7) | (0.0) | (18.4) | (17.2) | (1.2) | (31.3) | (30.7) | (0.6) | (0.0) | (0.6) | |||
| Eastern | Shandong (SD) | 2009–2012 | 42 | 25 | 20 | 5 | 0 | 10 | 10 | 0 | 4 | 4 | 0 | 3 | 0 |
| (100) | (59.4) | (47.5) | (11.9) | (0.0) | (23.8) | (23.8) | (0.0) | (9.5) | (9.5) | (0.0) | (7.1) | (0.0) | |||
| Anhui (AH) | 2011 | 136 | 74 | 63 | 11 | 0 | 45 | 45 | 0 | 8 | 8 | 0 | 2 | 7 | |
| (100) | (54.4) | (46.3) | (8.1) | (0.0) | (33.1) | (33.1) | (0.0) | (5.9) | (5.9) | (0.0) | (1.5) | (5.1) | |||
| Jiangsu (JS) | 2009–2012 | 49 | 29 | 21 | 7 | 1 | 10 | 9 | 1 | 3 | 3 | 0 | 1 | 6 | |
| (100) | (59.2) | (42.9) | (14.3) | (2.0) | (20.4) | (18.4) | (2.0) | (6.1) | (6.1) | (0.0) | (2.0) | (12.3) | |||
| Shanghai (SH) | 2009–2012 | 26 | 17 | 13 | 4 | 0 | 4 | 4 | 0 | 5 | 5 | 0 | 0 | 0 | |
| (100) | (65.4) | (50.0) | (15.4) | (0.0) | (15.4) | (15.4) | (0.0) | (19.2) | (19.2) | (0.0) | (0.0) | (0.0) | |||
| Central | Henan (HA) | 2012 | 58 | 16 | 9 | 7 | 0 | 32 | 32 | 0 | 8 | 1 | 7 | 2 | 0 |
| (100) | (27.6) | (15.5) | (12.1) | (0.0) | (55.2) | (55.2) | (0.0) | (13.8) | (1.7) | (12.1) | (3.4) | (0.0) | |||
| Hunan (HN) | 2010–2012 | 68 | 28 | 24 | 4 | 0 | 33 | 30 | 3 | 1 | 1 | 0 | 5 | 1 | |
| (100) | (41.2) | (35.3) | (5.9) | (0.0) | (48.5) | (44.1) | (4.4) | (1.5) | (1.5) | (0.0) | (7.4) | (1.5) | |||
| Sichuan(SC) | 2009 | 63 | 21 | 20 | 0 | 1 | 34 | 30 | 4 | 8 | 7 | 1 | 0 | 0 | |
| (100) | (33.3) | (31.7) | (0.0) | (1.6) | (54.0) | (47.7) | (6.3) | (12.7) | (11.1) | (1.6) | (0.0) | (0.0) | |||
| Southwestern | Yunnan (YN) | 2012 | 67 | 34 | 33 | 1 | 0 | 23 | 22 | 1 | 2 | 1 | 1 | 1 | 7 |
| (100) | (50.7) | (49.3) | (1.5) | (0.0) | (34.3) | (32.8) | (1.5) | (3.0) | (1.5) | (1.5) | (1.5) | (10.5) | |||
| Southern | Guangdong (GD) | 2011–2012 | 40 | 10 | 9 | 1 | 0 | 19 | 18 | 1 | 2 | 2 | 0 | 5 | 4 |
| (100) | (25.0) | (22.5) | (2.5) | (0.0) | (47.5) | (45.0) | (2.5) | (5.0) | (5.0) | (0.0) | (12.5) | (10.0) | |||
| Total | 975 | 548 | 312 | 229 | 7 | 255 | 238 | 17 | 120 | 108 | 12 | 19 | 33 | ||
| (100) | (56.2) | (32.0) | (23.5) | (0.7) | (26.2) | (24.4) | (1.7) | (12.3) | (11.1) | (1.2) | (1.9) | (3.4) | |||
The genotypes were determined based on the phylogenetic analyses to partial pol gene (HXB2: 2253–3278 nt). The percentage of case number in each subtype or CRFs are shown in parentheses.