The progress towards the 90 90 90 targets is measured using a cascade model, which tracks the continuum of care for people living with HIV. This involves: 1. HIV Testing and Diagnosis: The first 90 refers to the percentage of all people living with HIV who have been diagnosed. 2. Access to Antiretroviral Therapy: The second 90 indicates the percentage of diagnosed individuals who are receiving sustained ART. 3. Viral Load Suppression: The third 90 reflects the percentage of individuals on ART who have achieved viral suppression, meaning the virus is undetectable in their blood.
