Abstract
We report in this study a novel HIV-1 second-generation recombinant form (TJIH0172) composed of CRF01_AE and CRF07_BC isolated from a married HIV-positive male subject infected through homosexual behavior in Tianjin, China. The phylogenetic analysis of the near full-length genome of TJIH0172 reveals that one region of CRF07_BC inserted into the CRF01_AE backbone with two recombinant breakpoints observed in the vpu and env gene regions, respectively. The CRF01_AE regions (the regions I and III) of the recombinant are greatly clustered with the CRF01_AE subcluster 4 lineage, which is mainly circulating among men who have sex with men (MSM) in northern China. The CRF07_BC region (II) is clustered with two sequences (JX960600 and KF250366), which were discovered in the MSM population in Liaoning Province and Beijing city in northern China, respectively. The emergence of the novel recombinant strain from a married man who has sex with men in Tianjin, China, highlights the increasing complexity of the HIV-1 epidemic between MSM and their female partners and further molecular epidemiological investigation should be taken to track married MSM and their female partners to prevent HIV transmit from HIV high-risk populations to general populations.
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