Fig. 1
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12879-023-08956-9/MediaObjects/12879_2023_8956_Fig1_HTML.png)
Numbers (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 behavior