Abstract:The distribution of different HIV subtypes follows a geographical trend. HIV-1 (the most widespread type of HIV worldwide) is classified into three genetic groups: major (M), outlier (O) and novel (N). HIV-1 group M viruses have been classified into nine subtypes. Analysis of full-length genome sequencing has revealed intersubtype recombinants, which are thought to originate from individuals simultaneously infected with viruses of two or more subtypes. The extensive genetic variability of HIV-1 and internation… Show more
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