... Reduction JournalOpen AccessResearch Drug choice, spatial distribution, HIV risk, and HIV prevalence among injection drug users in St. Petersburg, RussiaGina Rae Kruse†1,8, Russell Barbour†2, ... neighborhoods Spatial Distribution of HIV Cases and Injection Drugs within the City of St. PetersburgFigure 1 Spatial Distribution of HIV Cases and Injection Drugs within the City of St. Petersburg. ... consequences includingimpulsivity, increased sexual activity, and injection risktaking including bingeing.The high prevalence of stimulant use has been a signifi-cant concern in the fight against HIV. ...