EarthTrends (http://earthtrends.wri.org) Searchable Database Results
Provided by the World Resources Institute (http://www.wri.org)
"Population, Health and Human Well-being -- AIDS/HIV: Orphans due to AIDS"

"Units: People"

,,2007,2005,2003,2001,
World
"World","",15000000,15200000,12600000,8000000,

,,2007,2005,2003,2001,
Country
"Angola","AGO",50000,160000,120000,23000,
"Benin","BEN",29000,62000,47000,11000,
"Botswana","BWA",95000,120000,100000,57000,
"Burkina Faso","BFA",100000,120000,100000,77000,
"Burundi","BDI",120000,120000,120000,72000,
"Cameroon","CMR",300000,240000,190000,110000,
"Côte d'Ivoire","CIV",420000,450000,410000,220000,
"Central African Rep","CAF",72000,140000,110000,32000,
"Chad","TCD",85000,57000,38000,31000,
"Comoros","COM",< 100,..,..,..,
"Congo","COG",69000,110000,100000,55000,
"Congo, Dem Rep","COD",..,680000,640000,..,
"Djibouti","DJI",5200,5700,4000,1500,
"Equatorial Guinea","GNQ",4800,4600,3700,1900,
"Eritrea","ERI",18000,36000,28000,5700,
"Ethiopia","ETH",650000,575000,480000,310000,
"Gabon","GAB",18000,20000,15000,8000,
"Gambia","GMB",2700,3800,2800,< 1000,
"Ghana","GHA",160000,170000,130000,45000,
"Guinea","GIN",25000,28000,20000,10000,
"Guinea-Bissau","GNB",5900,11000,7200,1900,
"Kenya","KEN",..,1100000,950000,..,
"Lesotho","LSO",110000,97000,75000,37000,
"Liberia","LBR",15000,..,..,6200,
"Madagascar","MDG",3400,13000,8200,< 500,
"Malawi","MWI",550000,550000,440000,240000,
"Mali","MLI",44000,94000,83000,16000,
"Mauritania","MRT",3000,6900,5700,< 500,
"Mauritius","MUS",< 500,..,..,< 100,
"Mozambique","MOZ",400000,510000,330000,120000,
"Namibia","NAM",..,85000,67000,..,
"Niger","NER",25000,46000,35000,7300,
"Nigeria","NGA",1200000,930000,660000,460000,
"Rwanda","RWA",220000,210000,220000,230000,
"Senegal","SEN",8400,25000,18000,3800,
"Sierra Leone","SLE",16000,31000,28000,6000,
"Somalia","SOM",8800,23000,18000,2000,
"South Africa","ZAF",1400000,1200000,780000,400000,
"Swaziland","SWZ",56000,63000,46000,19000,
"Tanzania","TZA",970000,1100000,970000,610000,
"Togo","TGO",68000,88000,70000,31000,
"Uganda","UGA",1200000,1000000,1000000,1100000,
"Zambia","ZMB",600000,710000,650000,390000,
"Zimbabwe","ZWE",1000000,1100000,1000000,720000,

Footnotes
No footnotes

Source
"Joint United Nations Programme on HIV/AIDS (UNAIDS). 2008. Report on the global AIDS epidemic. Geneva: UNAIDS. Available online at http://www.unaids.org/en/KnowledgeCentre/HIVData/GlobalReport/2008/2008_Global_report.asp."
""
"Joint United Nations Programme on HIV/AIDS (UNAIDS). 2006. Report on the global AIDS epidemic. Geneva: UNAIDS. Available online at http://www.unaids.org/en/HIV_data/2006GlobalReport/default.asp."


Technical Notes
"Adapted from:  Joint United Nations Programme on HIV/AIDS (UNAIDS). 2008. Report on the global AIDS epidemic. Geneva: UNAIDS. Available online at http://www.unaids.org/en/KnowledgeCentre/HIVData/GlobalReport/2008/2008_Global_report.asp."
""
"Joint United Nations Programme on HIV/AIDS (UNAIDS). 2006. Report on the global AIDS epidemic. Geneva: UNAIDS. Available online at http://www.unaids.org/en/HIV_data/2006GlobalReport/default.asp.Definition:"
"Orphans due to AIDS is the estimated number of children aged 0 to 17 years, alive at the end of the year specified, who have lost one or both parents to acquired immune deficiency syndrome (AIDS)."
""
"Years Covered and Frequency of Update:"
"These datasets, released in 2008 and 2006, contains estimates for the 2001, 2003, 2005 and 2007. The Joint United Nations Programme on HIV/AIDS (UNAIDS) releases reports on country-specific HIV/AIDS estimates every two years."
""
"Methodology:"
"UNAIDS/World Health Organization (WHO) estimates are based on all pertinent, available data, including surveys of pregnant women, population-based surveys (conducted at the household level), sentinel surveillance, case reporting, vital registration systems (the official recording of births and deaths), as well as other surveillance information. Sentinel surveillance involves the collection of HIV prevalence and detailed risk behavior information from individuals considered high risk at sentinel sites such as antenatal clinics (ANC), sexually transmitted infection (STI) clinics, or testing sites within vulnerable communities or sub-population groups such as sex workers or injecting drug users."
""
"Different sets of data are used to calculate estimates of HIV prevalence depending on the type of epidemic. In countries with generalized (high-level) epidemics, estimates of HIV prevalence are primarily based on blood samples from pregnant women in antenatal clinics (ANC). In the absence of population-based surveys that include testing for HIV antibodies, sentinel surveillance of women attending antenatal clinics generally provides the best available estimate of HIV prevalence in the population. "
""
"For countries with concentrated (low-level) epidemics, HIV estimates are based on sentinel surveillance among key populations who are at higher risk of HIV exposure—such as injecting drug users, sex workers, or men who have sex with men—and estimates of the size of populations at high and low risk."
""
"In both cases, data are analyzed to determine a best fitting curve that describes the evolution of adult HIV prevalence over time. This adult prevalence curve, along with national population estimates and epidemiological assumptions, is used to calculate the number of people infected, new infections, and deaths. "
""
"Changes in procedures and assumptions and improved coordination with countries have resulted in improved estimates of HIV and AIDS for 2007.  Data presented for 2001 estimates were also reproduced using this newer methodology.  The general methodology and tools used to produce the country-specific 2007 and 2001 estimates have been described in a series of papers in Sexually Transmitted Infections 2008; 84(Suppl 1) ""Improved data, methods and tools for the 2007 HIV and AIDS estimates and projections"", and in Sexually Transmitted Infections 2006; 82(Suppl 1). "
""
"Data for 2005 and 2003 were also produced using these new methodologies, based on advice and suggestions from the UNAIDS Reference Group on HIV/AIDS Estimates, Modeling and Projections. The latest estimates should not be compared with those published in previous years. For a detailed description of the methods, software, quality of data and development of ranges used in the 2005 estimates, please see the series of seven articles published in the journal Sexually Transmitted Infections in August 2004, available on-line at: http://sti.bmjjournals.com/content/vol80/suppl_1/.  "
""
"More information on the UNAIDS Reference Group on HIV/AIDS Estimates, Modeling and Projections can be found on-line at http://www.epidem.org/. "
""
"Data Reliability:"
"Some global estimates published here are lower than the previously published estimates. This should not be interpreted as a decrease in the number of people living with HIV/AIDS, but as an improvement in modeling methodology and better underlying data. "
""
"Data reliability varies on a country-by-country basis. The extent of uncertainty depends primarily on the type of epidemic and the quality, coverage, and consistency of a country's surveillance system. UNAIDS estimates low and high values for the total number of infections on-line at  http://data.unaids.org/pub/GlobalReport/2006/2006_GR_ANN2_en.pdf."