Abstract
We report here a novel human immunodeficiency virus type 1 (HIV-1) second-generation recombinant form comprising CRF01_AE and CRF07_BC isolated from an HIV-positive male subject infected among men who have sex with men (MSM) in Tianjin in north China. The phylogenetic analysis of the near full-length genome of TJIH0345 reveals that three regions of CRF01_AE were inserted into the CRF07_BC backbone with five recombinant breakpoints observed in the pol, vif, vpu, and env gene regions whose genome structure is distinctly different from other circulating recombinant forms and unique recombinant forms previously reported. The continued emergence of the novel recombinant strain in Tianjin, China, highlights the increasing complexity of the HIV-1 epidemic among the MSM population, and further molecular epidemiological investigation should be done to track the genetic evolution of HIV-1 strains to prevent HIV transmission.
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