Subtype B was the dominant strain among HIV type 1 infections except for the population of men who have sex with men in Harbin City, China.

TitleSubtype B was the dominant strain among HIV type 1 infections except for the population of men who have sex with men in Harbin City, China.
Publication TypeJournal Article
Year of Publication2013
AuthorsShao B, Li W-J, Liu T, Li Q-H, Li H, Chang M-L, Huang C-Q, Wang F-X, Wang B-Y
JournalAIDS research and human retroviruses
Volume29
Issue9
Pagination1260-4
Date Published2013 Sep
Abstract

We sought to identify the prevalent subtypes and study the genetic variation of HIV-1 circulating in HIV infections in Harbin City, China. Forty-seven samples from the env V3-V4 region were successfully sequenced and analyzed, which involved thirty-one men who have sex with men (MSM), eight heterosexuals, seven former plasma donors (FPD)/blood transfusion recipients (BT), and one injection drug user (IDU). In all, 46.8% of CRF01_AE, 40.4% of subtype B, and 12.8% of CRF07_BC were identified. CRF01_AE (64.5%) was the dominant strain in MSM, and subtype B (81.2%) was the chief strain in other infected subjects except for the MSM population. Among all the genotypes, the B subtype possesses greater diversity of the tetramer on the tip of V3 loop than CRF07_BC and CRF01_AE, in which the peculiar GWGR was commonly found. Because nationwide there is a trend toward the increasing presence of CRF01_AE, a consecutive surveillance campaign was necessary among all HIV vulnerable populations in this locality.

DOI10.1155/2013/589474
Alternate JournalAIDS Res. Hum. Retroviruses