Lesotho - Prevalence of HIV, total (% of population ages 15-49)

Prevalence of HIV, total (% of population ages 15-49) in Lesotho was 23.60 as of 2018. Its highest value over the past 28 years was 24.60 in 2014, while its lowest value was 3.20 in 1990.

Definition: Prevalence of HIV refers to the percentage of people ages 15-49 who are infected with HIV.

Source: UNAIDS estimates.

See also:

Year Value
1990 3.20
1991 4.60
1992 6.40
1993 8.50
1994 11.10
1995 13.80
1996 16.40
1997 18.70
1998 20.70
1999 22.20
2000 23.20
2001 23.90
2002 24.10
2003 24.20
2004 24.00
2005 23.80
2006 23.70
2007 23.60
2008 23.80
2009 23.90
2010 24.10
2011 24.30
2012 24.40
2013 24.50
2014 24.60
2015 24.50
2016 24.30
2017 24.00
2018 23.60

Limitations and Exceptions: The limited availability of data on health status is a major constraint in assessing the health situation in developing countries. Surveillance data are lacking for many major public health concerns. Estimates of prevalence and incidence are available for some diseases but are often unreliable and incomplete. National health authorities differ widely in capacity and willingness to collect or report information.

Statistical Concept and Methodology: HIV prevalence rates reflect the rate of HIV infection in each country's population. Low national prevalence rates can be misleading, however. They often disguise epidemics that are initially concentrated in certain localities or population groups and threaten to spill over into the wider population. In many developing countries most new infections occur in young adults, with young women especially vulnerable. Data on HIV are from the Joint United Nations Programme on HIV/AIDS (UNAIDS). Changes in procedures and assumptions for estimating the data and better coordination with countries have resulted in improved estimates of HIV and AIDS. The models, which are routinely updated, track the course of HIV epidemics and their impact, making full use of information in HIV prevalence trends from surveillance data as well as survey data. The models take into account reduced infectivity among people receiving antiretroviral therapy (which is having a larger impact on HIV prevalence and allowing HIV-positive people to live longer) and allow for changes in urbanization over time in generalized epidemics. The estimates include plausibility bounds, which reflect the certainty associated with each of the estimates.

Aggregation method: Weighted average

Periodicity: Annual


Topic: Health Indicators

Sub-Topic: Risk factors