Estimated number of malaria cases in Sierra Leone
Sierra Leone: Estimated number of malaria cases was 2.44 million Cases in 2024. ▲ Rising
Estimated number of malaria cases in Sierra Leone, 2000–2024
Source: World Health Organization - Global Health Observatory (2026) – with minor processing by Our World in Data. Measured in Cases.
Analysis
The most recent figure for estimated number of malaria cases in Sierra Leone is 2.44 million Cases, measured in 2024.
Compared with earlier readings it is up 1.6% on the previous year and down 6.6% over ten years.
Over the whole period, estimated number of malaria cases in Sierra Leone peaked at 2.73 million Cases in 2011 and was at its lowest, 1.88 million Cases, in 2000.
Sierra Leone ranks 25th of 108 countries on this measure, in the top quarter.
The long-run direction has been consistently rising across the 25 years of available data.
Estimated number of malaria cases in Sierra Leone, year by year
| Year | Cases | Change |
|---|---|---|
| 2000 | 1.88 million Cases | — |
| 2001 | 1.99 million Cases | +6.2% |
| 2002 | 2.12 million Cases | +6.1% |
| 2003 | 2.15 million Cases | +1.4% |
| 2004 | 2.17 million Cases | +1.2% |
| 2005 | 2.21 million Cases | +1.7% |
| 2006 | 2.24 million Cases | +1.3% |
| 2007 | 2.33 million Cases | +4.1% |
| 2008 | 2.52 million Cases | +8.1% |
| 2009 | 2.69 million Cases | +7.0% |
| 2010 | 2.73 million Cases | +1.3% |
| 2011 | 2.73 million Cases | +0.0% |
| 2012 | 2.71 million Cases | -0.9% |
| 2013 | 2.66 million Cases | -1.8% |
| 2014 | 2.62 million Cases | -1.7% |
| 2015 | 2.59 million Cases | -1.0% |
| 2016 | 2.62 million Cases | +1.2% |
| 2017 | 2.59 million Cases | -1.3% |
| 2018 | 2.57 million Cases | -0.5% |
| 2019 | 2.49 million Cases | -3.3% |
| 2020 | 2.48 million Cases | -0.5% |
| 2021 | 2.48 million Cases | -0.1% |
| 2022 | 2.47 million Cases | -0.3% |
| 2023 | 2.40 million Cases | -2.6% |
| 2024 | 2.44 million Cases | +1.6% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 2.23 million Cases | 1.88 million Cases | 2.69 million Cases | 10 |
| 2010s | 2.63 million Cases | 2.49 million Cases | 2.73 million Cases | 10 |
| 2020s | 2.45 million Cases | 2.40 million Cases | 2.48 million Cases | 5 |
Countries ranked near Sierra Leone
More health data for Sierra Leone
- Un projection of annual infant deaths, annual growth rate -2.34 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate 0.773 % change on previous year (2090)
- Estimated changes in temperature-related death rates compared to projected death rates 1,199 deaths per 1,000 people (2090)
- Number of infants who die before age 1 4,209 deaths (2100)
- Population ages 0-14, female, annual growth rate 0.8723 % change on previous year (2025)
- Population ages 0-14, female, per unit of GDP 0.0002 units per US$ of GDP (2025)
- Population ages 0-14, female, per capita 0.1868 units per person (2025)
- Population ages 0-14, male, annual growth rate 0.8951 % change on previous year (2025)
- Population ages 0-14, male, per unit of GDP 0.0002 units per US$ of GDP (2025)
- Population ages 0-14, male, per capita 0.1897 units per person (2025)
Frequently asked questions
- What is estimated number of malaria cases in Sierra Leone?
- Estimated number of malaria cases in Sierra Leone was 2.44 million Cases in 2024, according to World Health Organization - Global Health Observatory (2026) – with minor processing by Our World in Data.
- What is the highest estimated number of malaria cases recorded in Sierra Leone?
- The highest recorded value was 2.73 million Cases in 2011.
- What is the lowest estimated number of malaria cases recorded in Sierra Leone?
- The lowest recorded value was 1.88 million Cases in 2000.
- How does Sierra Leone rank for estimated number of malaria cases?
- Sierra Leone ranks 25th out of 108 countries with data for 2024.
- Is estimated number of malaria cases rising or falling in Sierra Leone?
- Over the last ten years it is down 6.6%. The long-run trend across the full record is rising.
- Where does this Sierra Leone data come from?
- The figures come from World Health Organization - Global Health Observatory (2026) – with minor processing by Our World in Data, published as part of Estimated number of malaria cases. Statizoid updates them automatically from the source API.
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About this data
The World Health Organization publishes estimates of the total number of malaria cases, based on confirmed and suspected cases submitted by national programs, and taking underreporting into account.