HIV prevalence rate, adult 15-49 years in Sierra Leone

Sierra Leone: HIV prevalence rate, adult 15-49 years was 2.1% in 2009. ◆ Volatile

Latest (2009)
2.1%
Change on year
up 5.0%
World rank
28th
of 48 countries
All-time high
2.1%
in 2009
All-time low
0.1%
in 1990
Years of data
20
1990–2009

HIV prevalence rate, adult 15-49 years in Sierra Leone, 1990–2009

00.511.521990199920091990: 0.1 %; high estimate1991: 0.1 %; high estimate1992: 0.1 %; high estimate1993: 0.2 %; high estimate1994: 0.5 %; high estimate1995: 1.1 %; high estimate1996: 1.3 %; high estimate1997: 1.5 %; high estimate1998: 1.5 %; high estimate1999: 1.6 %; high estimate2000: 1.6 %; high estimate2001: 1.7 %; high estimate2002: 1.7 %; high estimate2003: 1.7 %; high estimate2004: 1.8 %; high estimate2005: 1.8 %; high estimate2006: 1.8 %; high estimate2007: 1.9 %; high estimate2008: 2 %; high estimate2009: 2.1 %; high estimate

Source: UNAIDS and the WHO's Report on the Global AIDS Epidemic. Measured in %; high estimate.

Analysis

The most recent figure for hiv prevalence rate, adult 15-49 years in Sierra Leone is 2.1%, measured in 2009. That is the highest value across all 20 years on record.

The figure is up 5.0% on the previous year and up 31.2% over ten years.

Over the whole period, hiv prevalence rate, adult 15-49 years in Sierra Leone peaked at 2.1% in 2009 and was at its lowest, 0.1%, in 1990.

Sierra Leone ranks 28th of 48 countries on this measure, in the middle of the range.

The series is highly variable year to year, so single readings are best treated with caution.

HIV prevalence rate, adult 15-49 years in Sierra Leone, year by year

Annual values for HIV prevalence rate, adult 15-49 years (%; high estimate) in Sierra Leone, 1990 to 2009.
Year %; high estimate Change
1990 0.1%
1991 0.1% +0.0%
1992 0.1% +0.0%
1993 0.2% +100.0%
1994 0.5% +150.0%
1995 1.1% +120.0%
1996 1.3% +18.2%
1997 1.5% +15.4%
1998 1.5% +0.0%
1999 1.6% +6.7%
2000 1.6% +0.0%
2001 1.7% +6.2%
2002 1.7% +0.0%
2003 1.7% +0.0%
2004 1.8% +5.9%
2005 1.8% +0.0%
2006 1.8% +0.0%
2007 1.9% +5.6%
2008 2.0% +5.3%
2009 2.1% +5.0%

Averages by decade

DecadeAverage LowestHighest Years
1990s 0.8% 0.1% 1.6% 10
2000s 1.8% 1.6% 2.1% 10

Countries ranked near Sierra Leone

  1. 25 Guinea-Bissau 3.0% compare
  2. 26 Gambia 2.9% compare
  3. 27 Angola 2.4% compare
  4. 29 Ghana 2.0% compare
  5. 30 Liberia 1.8% compare
  6. 31 Congo, Democratic Republic of the 1.6% compare
  7. 31 Guinea 1.6% compare

See the full ranking of 49 places →

More health data for Sierra Leone

All data for Sierra Leone →

Frequently asked questions

What is hiv prevalence rate, adult 15-49 years in Sierra Leone?
Hiv prevalence rate, adult 15-49 years in Sierra Leone was 2.1% in 2009, according to UNAIDS and the WHO's Report on the Global AIDS Epidemic.
What is the highest hiv prevalence rate, adult 15-49 years recorded in Sierra Leone?
The highest recorded value was 2.1% in 2009.
What is the lowest hiv prevalence rate, adult 15-49 years recorded in Sierra Leone?
The lowest recorded value was 0.1% in 1990.
How does Sierra Leone rank for hiv prevalence rate, adult 15-49 years?
Sierra Leone ranks 28th out of 48 countries with data for 2009.
Is hiv prevalence rate, adult 15-49 years rising or falling in Sierra Leone?
Over the last ten years it is up 31.2%. The long-run trend across the full record is volatile.
Where does this Sierra Leone data come from?
The figures come from UNAIDS and the WHO's Report on the Global AIDS Epidemic, published as part of HIV prevalence rate, adult 15-49 years (%; high estimate). Statizoid updates them automatically from the source API.

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HIV prevalence rate, adult 15-49 years in Sierra Leone. Statizoid, drawing on UNAIDS and the WHO's Report on the Global AIDS Epidemic. Retrieved 13 September 2026, from https://health.statizoid.com/stat/hiv-prevalence-rate-adult-15-49-years-percent-high-estimate/sierra-leone/

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About this data

Indicator
HIV prevalence rate, adult 15-49 years (%; high estimate)
Unit
%; high estimate
Source
UNAIDS and the WHO's Report on the Global AIDS Epidemic
Licence
CC BY 4.0 (World Bank Open Data)
Coverage
49 places, 965 data points, 1990–2009
Last refreshed

Prevalence of HIV refers to the percentage of people ages 15-49 who are infected with HIV based on a high estimate.