Abstract
We identified a novel CRF01_AE and 07_BC HIV-1 recombinant form in Guizhou province in southwest China. The phylogenetic analysis of the near full-length sequence reveals that it was divided into five segments by four breakpoints, and the CRF01_AE regions of the recombinant were clustered with subcluster 4 lineage of CRF01_AE, which mainly circulated among men who have sex with men (MSM) in China. The CRF07_BC regions of the recombinant were clustered with CRF07_BC lineage, which circulated among Chinese MSM. This is the first detection of a novel HIV-1 second-generation recombinant form (CRF07_BC/CRF01_AE) in Guizhou, which shows the increasing significance of heterosexual transmission contributing to the complexity of the HIV-1 epidemic in southwest China, and more effort measures should be taken to monitor the genetic evolution of HIV-1 strains and prevent HIV-1 transmissions.
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