Yellow fever - number of reported cases in Sierra Leone
Sierra Leone: Yellow fever - number of reported cases was 0 in 2025. ◆ Volatile
Latest (2025)
0
Change on year
down 100.0%
World rank
26th
of 199 countries
All-time high
361
in 2011
All-time low
0
in 1997
Years of data
27
1975–2025
Yellow fever - number of reported cases in Sierra Leone, 1975–2025
Source: World Health Organization, Global Health Observatory.
Analysis
The most recent figure for yellow fever - number of reported cases in Sierra Leone is 0, measured in 2025. That is the lowest value across all 27 years on record.
Compared with earlier readings it is down 100.0% on the previous year.
Over the whole period, yellow fever - number of reported cases in Sierra Leone peaked at 361 in 2011 and was at its lowest, 0, in 1997.
That places Sierra Leone 26th out of 199 countries with data for 2025, putting it in the top quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Yellow fever - number of reported cases in Sierra Leone, year by year
| Year | Value | Change |
|---|---|---|
| 1975 | 134 | — |
| 1995 | 1 | -99.3% |
| 1997 | 0 | -100.0% |
| 2000 | 1 | — |
| 2002 | 0 | -100.0% |
| 2003 | 95 | — |
| 2004 | 0 | -100.0% |
| 2005 | 3 | — |
| 2006 | 12 | +300.0% |
| 2007 | 0 | -100.0% |
| 2008 | 111 | — |
| 2009 | 3 | -97.3% |
| 2010 | 0 | -100.0% |
| 2011 | 361 | — |
| 2012 | 94 | -74.0% |
| 2013 | 3 | -96.8% |
| 2014 | 0 | -100.0% |
| 2015 | 0 | — |
| 2016 | 0 | — |
| 2017 | 0 | — |
| 2018 | 0 | — |
| 2019 | 0 | — |
| 2021 | 0 | — |
| 2022 | 2 | — |
| 2023 | 160 | +7900.0% |
| 2024 | 96 | -40.0% |
| 2025 | 0 | -100.0% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 134 | 134 | 134 | 1 |
| 1990s | 0.5 | 0 | 1 | 2 |
| 2000s | 25 | 0 | 111 | 9 |
| 2010s | 45.8 | 0 | 361 | 10 |
| 2020s | 51.6 | 0 | 160 | 5 |
Countries ranked near Sierra Leone
- 24 Niger 1 compare
- 24 Mali 1 compare
- 26 San Marino 0
- 26 Maldives 0
- 26 Ghana 0 compare
- 26 El Salvador 0
- 26 Palau 0
- 26 Guam 0
- 26 Turkmenistan 0
- 26 Guinea 0 compare
- 26 Guinea-Bissau 0 compare
- 26 Northern Mariana Islands 0
- 26 Mauritius 0
- 26 Afghanistan 0
- 26 Montenegro 0
- 26 Cape Verde 0
- 26 Brunei Darussalam 0
- 26 Belarus 0
- 26 Bulgaria 0
- 26 British Virgin Islands 0
- 26 Luxembourg 0
- 26 Guatemala 0
- 26 Serbia 0
- 26 Lebanon 0
- 26 Bermuda 0
- 26 Haiti 0
- 26 Ukraine 0
- 26 Germany 0
- 26 Mongolia 0
- 26 Antigua and Barbuda 0
- 26 Syria 0
- 26 Latvia 0
- 26 Trinidad and Tobago 0 compare
- 26 Mauritania 0 compare
- 26 Portugal 0
- 26 Grenada 0
- 26 Saudi Arabia 0
- 26 Bahrain 0
- 26 Paraguay 0 compare
- 26 Uruguay 0
- 26 Seychelles 0
- 26 Eritrea 0
- 26 New Zealand 0
- 26 French Polynesia 0
- 26 Guyana 0 compare
- 26 Estonia 0
- 26 Republic of Moldova 0
- 26 Albania 0
- 26 Sweden 0
- 26 Croatia 0
- 26 Zambia 0
- 26 Namibia 0 compare
- 26 United Kingdom of Great Britain and Northern Ireland 0 compare
- 26 Timor-Leste 0
- 26 Italy 0
- 26 Iceland 0
- 26 South Africa 0
- 26 Macao 0
- 26 Armenia 0
- 26 Belgium 0 compare
- 26 Australia 0
- 26 Singapore 0
- 26 Solomon Islands 0
- 26 Dominican Republic 0
- 26 Samoa 0
- 26 Barbados 0
- 26 Romania 0 compare
- 26 Japan 0
- 26 Honduras 0
- 26 Oman 0
- 26 Eswatini 0
- 26 Hong Kong 0
- 26 North Korea 0
- 26 Kenya 0 compare
- 26 Turks and Caicos Islands 0
- 26 Fiji 0
- 26 Saint Kitts and Nevis 0
- 26 Panama 0 compare
- 26 Rwanda 0
- 26 Republic of Korea 0
- 26 Niue 0
- 26 Malaysia 0
- 26 United States 0 compare
- 26 Argentina 0 compare
- 26 Anguilla 0
- 26 Georgia 0 compare
- 26 Uzbekistan 0
- 26 Ireland 0
- 26 Sao Tome and Principe 0
- 26 Micronesia (country) 0
- 26 Malta 0
- 26 Slovenia 0
- 26 Kiribati 0
- 26 Sri Lanka 0
- 26 Netherlands 0 compare
- 26 Greece 0
- 26 Jamaica 0
- 26 Zimbabwe 0
- 26 Algeria 0
- 26 Saint Lucia 0
- 26 Belize 0
- 26 Nicaragua 0
- 26 Saint Vincent and the Grenadines 0
- 26 Libya 0
- 26 Thailand 0
- 26 Lao People's Democratic Republic 0
- 26 Montserrat 0
- 26 Costa Rica 0
- 26 North Macedonia 0
- 26 United Arab Emirates 0
- 26 Finland 0
- 26 Iraq 0
- 26 Norway 0
- 26 Cyprus 0
- 26 Botswana 0
- 26 Iran 0
- 26 Bosnia and Herzegovina 0
- 26 Naoero 0
- 26 Comoros 0
- 26 Mexico 0
- 26 Austria 0
- 26 Denmark 0
- 26 Benin 0 compare
- 26 Slovakia 0
- 26 Andorra 0
- 26 Bhutan 0
- 26 Kuwait 0
- 26 Lithuania 0
- 26 Senegal 0 compare
- 26 Yemen 0
- 26 New Caledonia 0
- 26 Dominica 0
- 26 Jordan 0
- 26 Poland 0
- 26 Israel 0 compare
- 26 Equatorial Guinea 0 compare
- 26 Palestine, State of 0
- 26 Switzerland 0 compare
- 26 Cook Islands 0
- 26 Marshall Islands 0
- 26 Cuba 0
- 26 Kazakhstan 0
- 26 Indonesia 0
- 26 Lesotho 0
- 26 Azerbaijan 0
- 26 Bahamas 0
- 26 Chile 0 compare
- 26 Cayman Islands 0
- 26 Czechia 0 compare
- 26 Djibouti 0
- 26 Spain 0 compare
- 26 Ethiopia 0 compare
- 26 Hungary 0
- 26 Madagascar 0
- 26 Papua New Guinea 0
- 26 Qatar 0
- 26 Tonga 0
- 26 Vanuatu 0
- 26 American Samoa 0
- 26 France 0 compare
- 26 Burundi 0 compare
- 26 Tokelau 0
- 26 Tuvalu 0
- 26 Mozambique 0
- 26 Morocco 0
- 26 Tunisia 0
- 26 Tajikistan 0
- 26 Russian Federation 0
- 26 Wallis and Futuna 0
- 26 Cambodia 0
- 26 Malawi 0
- 26 Kyrgyzstan 0
- 26 Monaco 0
- 26 Aruba 0
- 26 Türkiye 0
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 yellow fever - number of reported cases in Sierra Leone?
- Yellow fever - number of reported cases in Sierra Leone was 0 in 2025, according to World Health Organization, Global Health Observatory.
- What is the highest yellow fever - number of reported cases recorded in Sierra Leone?
- The highest recorded value was 361 in 2011.
- What is the lowest yellow fever - number of reported cases recorded in Sierra Leone?
- The lowest recorded value was 0 in 1997.
- How does Sierra Leone rank for yellow fever - number of reported cases?
- Sierra Leone ranks 26th out of 199 countries with data for 2025.
- Where does this Sierra Leone data come from?
- The figures come from World Health Organization, Global Health Observatory, published as part of Yellow fever - number of reported cases. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 27 observations, free to reuse under CC BY-NC-SA 3.0 IGO (WHO).