Molecular epidemiology of an HIV-1 subtype A subcluster among injection drug users in the Southern Ukraine - PubMed (original) (raw)
Molecular epidemiology of an HIV-1 subtype A subcluster among injection drug users in the Southern Ukraine
V A Novitsky et al. AIDS Res Hum Retroviruses. 1998.
Abstract
Phylogenetic characterization of primary isolates from 17 HIV-1-infected individuals within a recent epidemic in the city of Odessa, Ukraine was conducted. The isolates were drawn from two time periods, 1993 and 1996. The 1996 isolates coincided with the first apparent expansion of HIV-1 among injection drug users (IDU). Multi-locus phylogenetic analysis indicated that HIV-1 gag, env, tat, and long terminal repeat (LTR) sequences all conformed to the HIV-1 classification of a subcluster within subtype A. There was no evidence for intersubtype recombinants among these isolates. A number of potential signature sequences, particularly within env, were identified in these two time periods, possibly suggesting a selective pressure on viral evolution among IDU. Results of this study are consistent with a recent introduction and subsequent independent evolution of an HIV-1 subtype A subcluster among IDU in the Southern Ukraine. This study demonstrates a congruence of multi-locus phylogenetic analysis, and suggests that non-B genetic subtypes, such as HIV-1 subtype A, may become relevant to the study of IDU transmission in the future.
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