Abstract
Unique recombinant forms (URFs) are more likely developed among HIV-1 infections through men who have sex with men (MSM) because of cocirculation of multiple subtypes. In this study, two novel URFs deriving from two HIV-positive subjects (HB010014, HB010063) were identified in Shijiazhuang, Hebei province, China, and two sequences formed a distinct monophyletic cluster. Further recombination analysis showed that of two new URFs were consisted of circulating recombinant form (CRF)01_AE and CRF07_BC. The subregion phylogenetic analysis indicated that CRF01_AE segments were traced back to cluster 4 of CRF01_AE strains, which were prevalent among HIV-1 infections through MSM in China. New URFs being developing gradually and spreading released that more and more novel recombinant strains of HIV-1 could be developed, which means that the past prevention strategies need to be adjusted.
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