Fig. 1From: Behavioral verification and risk factors of HIV cross-population transmission in China: analysis of national surveillance data 1989–2022Numbers (left) and proportions (right) of individuals with HIV, categorized by different contact histories across the years 1989–2022 in China. Abbreviations: IDU = injection drug users; FPD = former plasma donors; MSM = men who have sex with men; HRHB = high-risk heterosexual behaviorBack to article page