<P> The human immunodeficiency virus (HIV), which causes AIDS, varies in prevalence from nation to nation . Listed here are the prevalence rates among adults in various countries, based on data from various sources, largely the CIA World Factbook . As of 2015, it is estimated that there are 36.7 million people worldwide infected with HIV . </P> <P> The HIV pandemic is most severe in Sub-Saharan Africa . Over 60% of all people living with HIV reside within the region . Adult HIV prevalence exceed 20% in Swaziland, Botswana, and Lesotho, while an additional six countries report adult HIV prevalence of at least 10% . In terms of raw HIV case numbers, South Africa, followed by Nigeria (3.2 million), and Philippines (2.1 million) by the end of 2013 . While South Africa's large population of HIV - positive people is attributable to its high disease prevalence (17.3%, ranked highest in the world) and Nigeria is ranked 20th (3.7%), India's prevalence (0.3%) is comparable to Canada, the UK, and lower than the USA due to its large population (192 million). </P> <P> On the other end of the spectrum, Svalbard is reported as having no cases of HIV / AIDS, while Bhutan has a much larger population but still only an estimated 246 cases through 2011 . Countries such as Afghanistan, and Cape Verde are reported to have the lowest prevalence of the disease, at less than 0.1% of their populations . </P>

Which country has the highest hiv in africa