In Viet Nam, HIV epidemics are concentrated, with a very high HIV prevalence among people who inject drugs (PWID), female sex workers (FSWs) and men who have sex with men (MSM) and very low in the general population. There has been an expansion of harm-reduction, antiretroviral treatment, care and support services. This book is based on quantitative and qualitative studies to measure HIV risk behaviour and determinants among PLHIV, examine the context of HIV risk behaviour and obstacles to behavioural changes among HIV-positive PWID, explore how PLHIV perceive and experience stigma and...