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Near Full-Length Genome Sequence of a Novel HIV-1 Second-Generation Recombinant Form (CRF01_AE/CRF07_BC) Detected Among Blood Donors in North China.

In this study, a novel CRF01_AE/07_BC HIV-1 recombinant form, with five breakpoints in the pol, vpr, env, and nef gene regions, was identified from a voluntary blood donor in North China. Our study showed that this HIV-1 recombinant form might be a second-generation recombinant form from two predominant strains in the men who have sex with men (MSM) population, with the CRF07_BC fragments belonging to a CRF07_BC lineage specific to Chinese MSM and the CRF01_AE fragments belonging to the CRF01_AE lineage 5 common among MSM in northern China. Our findings supported the high-risk blood donation behaviors of MSM, implied the increasing complexity of the HIV-1 epidemic among the Chinese MSM population, and called more attention to the effectiveness of the screening test for the growing number of new HIV-1 recombinant forms.