Without diagnosis, HIV infection is progressing in stages, slowly getting worse. HIV is progressively destroying the immune system and ultimately causing acquired immunodeficiency syndrome (AIDS). There is no cure for HIV, but HIV medication (called antiretroviral therapy or ART) will delay or prevent progression from one point to the next. HIV drugs are helping people living with HIV longer, safer lives. The three stages of HIV infection are (1) acute HIV infection, (2) chronic HIV infection, and (3) AIDS.