title: O14.3 How war and risky sexual behaviours shape the ukrainian hiv epidemic: a phylogeographic analysis
abstract: <h3>Introduction</h3> Ukraine has one of the largest HIV epidemics in Europe that was historically driven by people who inject drugs (PWID). The epidemic showed signs of stabilisation since 2012, but the recent war in the East of the country might be reinforcing the virus spread. We have studied HIV flow within Ukraine in recent years and explored factors that might explain it. <h3>Methods</h3> We used HIV subtype-A pol nucleotide sequences sampled in 2012–2015 from 427 patients of 24 regional A