Botswana is a member of the African Union, the Southern African Development Community, the Commonwealth of Nations, and the United Nations. The country has been adversely affected by the HIV/AIDS epidemic. Despite the success in programmes to make treatments available, and to educate the populace about how to stop the spread of HIV/AIDS, the number of people with AIDS rose from 290,000 in 2005 to 320,000 in 2013. , Botswana has the third-highest prevalence rate for HIV/AIDS, with roughly 20% of the population infected.