# HIV prevalence index The **HIV prevalence index** measures the proportion of **people aged 15–49** who are living with **HIV**. - From **2012 to 2021**, **South Africa**, **Lesotho**, and **Zimbabwe** were among the countries with the highest infection rates. - In **2012**, **Lesotho** had the highest prevalence rate at **24.6%** of the population. - In the following years, both **Lesotho** and **Zimbabwe** saw a slight decline in their **HIV prevalence rates**. - Meanwhile, rates in **South Africa** have remained relatively stable.

Expand