HIV-1 CRF01_AE in intravenous drug users in Hanoi, Vietnam.

To investigate the molecular epidemiology of HIV-1 among intravenous drug users (IDUs) in Hanoi we collected 17 samples from individuals living in 12 locations in and around Hanoi. The HIV-1 env V3 and gag p17 regions were directly sequenced from the proviral PBMC population. The majority of the IDUs were infected with HIV-1 CRF01_AE and one individual carried a p17/V3 CRF01/subtype C recombinant.