3. Lesotho
Adult prevalence rate: 23.39%
Around 310,000 people in this African country that ranks 3rd on our list of countries that have the most AIDS cases in the world is considered to be HIV/AIDS infected, and the number of AIDS-related deaths goes up to 18,000. The HIV-prevalence among women in Lesotho is again disproportional in comparison to men, since the number is 30%, while prevalence among men is around 19% in the same period.