HIV/AIDS is a global issue that disproportionately affects developing countries and vulnerable groups. By 2000, over 34 million people worldwide were living with HIV/AIDS, with 95% residing in developing nations. Responses have included prevention education programs, working to increase access to low-cost treatment, and addressing underlying social and economic factors that increase risk. One such program is the National Highway One Project in Vietnam, which aims to reduce transmission along major transport routes through community outreach and encouraging behavior change.