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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.[1][2][3] As of 2009, it is estimated that there are 33.3 million people worldwide infected with HIV.[4]
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 has largest population living with HIV (6.3 million), followed by Nigeria (3.2 million), and India (2.1 million) by the end of 2013.[5][6] While South Africa's large population of HIV-positive people is attributable to its high disease prevalence (17.3%), neither Nigeria (3.7%) nor India (0.3%) are particularly noteworthy in this regard. Rather, their high population of HIV-positive people is an artifact of very large national populations—174 million and 1.25 billion, respectively.[1]
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.[7] 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.[1]
As the majority of people infected with HIV are unaware of their status, it is reasonable to expect that there may be significant cases of under-reporting and inaccuracies in certain listed statistics. Estimates may vary wildly between source or between years as old information is discarded and new information is acquired. Documented cases lists do not give an accurate description of the epidemic, but do attempt to quantify actual known cases, as well as documented cumulative impact.
As of January 5, 2011, all of the data in the following table comes from three tables from the UNICEF.[8][9][10]
An asterisk * indicates that the CIA World Factbook lists this piece of data as not having an available source.
By region:
This article incorporates public domain material from websites or documents of the CIA World Factbook.
South Africa, Uganda, Kenya, Mozambique, Swaziland
India, Canada, United Kingdom, Africa, Australia
Delhi, India, Rajasthan, Pakistan, Maharashtra
Pakistan, Herat, Kandahar, Wayback Machine, Mughal Empire
Evolution, Rna, Syphilis, Lentivirus, Cancer
Jakarta, West Java, Bali, Indonesia, Papua (province)
United States, Indonesia, China, Mexico, Ghana
Hiv, Haiti, Hiv/aids, Belgium, HIV/AIDS in Canada
Hiv, Tuberculosis, Discrimination, Haiti, HIV/AIDS in Canada
HIV/AIDS in Africa, Hiv, HIV/AIDS in Ethiopia, HIV/AIDS in South Africa, HIV/AIDS in Uganda