Prevalence of HIV is the percentage of people who are infected with HIV. Youth rates are as a percentage of the relevant age group.
| 1990 | 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Botswana | 7.3 | 21.2 | 14.7 | 10.2 | 9.7 | 9.4 | 9.1 | 8.9 | 8.7 | 8.4 | 8.1 | 7.6 | 7.1 | 6.5 | 5.9 | 5.3 |
| Lesotho | 2.4 | 17.6 | 15.0 | 13.7 | 13.5 | 13.2 | 13.1 | 12.8 | 12.5 | 11.9 | 11.1 | 10.4 | 9.6 | 8.9 | 8.2 | 7.4 |
| Namibia | 1.8 | 7.6 | 5.6 | 4.4 | 4.4 | 4.5 | 4.5 | 4.6 | 4.8 | 5.1 | 5.4 | 5.7 | 5.8 | 5.8 | 5.8 | 5.7 |
| South Africa | 1.5 | 16.8 | 16.6 | 14.1 | 13.7 | 13.2 | 12.8 | 12.5 | 12.1 | 11.7 | 11.3 | 10.8 | 10.3 | 9.8 | 9.2 | 8.7 |
| Eswatini | 1.3 | 24.9 | 23.3 | 21.7 | 20.9 | 20.4 | 20.1 | 19.6 | 18.8 | 17.6 | 16.3 | 15.4 | 14.6 | 13.5 | 12.7 | 11.7 |