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Details

Autor(en) / Beteiligte
Titel
Phylodynamic evolution of HIV‐1 A6 sub‐subtype epidemics in Poland
Ist Teil von
  • Journal of medical virology, 2024-02, Vol.96 (2), p.e29482-n/a
Ort / Verlag
United States: Wiley Subscription Services, Inc
Erscheinungsjahr
2024
Quelle
MEDLINE
Beschreibungen/Notizen
  • The human immunodeficiency virus type 1 (HIV‐1) A6 sub‐subtype is highly prevalent in Eastern Europe. Over the past decade, the dissemination of the A6 lineage has been expanding in Poland. The recent Russian invasion of Ukraine may further escalate the spread of this sub‐subtype. While evolutionary studies using viral sequences have been instrumental in identifying the HIV epidemic patterns, the origins, and dynamics of the A6 sub‐subtype in Poland remain to be explored. We analyzed 1185 HIV‐1 A6 pol sequences from Poland, along with 8318 publicly available sequences from other countries. For analyses, phylogenetic tree construction, population dynamics inference, Bayesian analysis, and discrete phylogeographic modeling were employed. Of the introduction events to Poland, 69.94% originated from Ukraine, followed by 29.17% from Russia. Most A6 sequences in Poland (53.16%) formed four large clades, with their introductions spanning 1993−2008. Central and Southern Polish regions significantly influenced migration events. Transmissions among men who have sex with men (MSM) emerged as the dominant risk group for virus circulation, representing 72.92% of migration events. Sequences from migrants were found primarily outside the large clades. Past migration from Ukraine has fueled the spread of the A6 sub‐subtype and the current influx of war‐displaced people maintains the growing national epidemic.

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