Share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Sierra Leone
Sierra Leone: Share of one-year-olds vaccinated against diphtheria, tetanus and pertussis was 91.0% in 2024. ▲ Rising
Share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Sierra Leone, 1999–2024
Source: WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data. Measured in %.
Analysis
The most recent figure for share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Sierra Leone is 91.0%, measured in 2024.
That represents a change of up 9.6% over ten years.
Over the whole period, share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Sierra Leone peaked at 95.0% in 2019 and was at its lowest, 38.0%, in 2001.
That places Sierra Leone 94th out of 194 countries with data for 2024, putting it in the middle of the range.
The long-run direction has been consistently rising across the 26 years of available data.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1990s | 43.0% | 43.0% | 43.0% | 1 |
| 2000s | 62.7% | 38.0% | 84.0% | 10 |
| 2010s | 88.9% | 83.0% | 95.0% | 10 |
| 2020s | 91.2% | 91.0% | 92.0% | 5 |
Countries ranked near Sierra Leone
More reference data data for Sierra Leone
- Emission Totals - Emissions (CO2eq) from N2O (AR5) - Burning - Crop re 8.39 (2050)
- Emission Totals - Emissions (N2O) - IPCC Agriculture 2.72 (2050)
- Emission Totals - Emissions (CH4) - IPCC Agriculture 79.92 (2050)
- Emission Totals - Emissions (CH4) - Manure Management 2.1 (2050)
- Emission Totals - Emissions (N2O) - Manure left on Pasture 1.91 (2050)
- Emission Totals - Emissions (N2O) - Manure Management 0.044 (2050)
- Emission Totals - Emissions (N2O) - Crop Residues 0.6534 (2050)
- Emission Totals - Emissions (N2O) - Burning - Crop residues 0.0317 (2050)
- Emission Totals - Emissions (N2O) - Manure applied to Soils 0.0797 (2050)
- Emission Totals - Emissions (CO2eq) from N2O (AR5) - Manure Management 11.67 (2050)
Frequently asked questions
- What is share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Sierra Leone?
- Share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Sierra Leone was 91.0% in 2024, according to WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data.
- What is the highest share of one-year-olds vaccinated against diphtheria, tetanus and pertussis recorded in Sierra Leone?
- The highest recorded value was 95.0% in 2019.
- What is the lowest share of one-year-olds vaccinated against diphtheria, tetanus and pertussis recorded in Sierra Leone?
- The lowest recorded value was 38.0% in 2001.
- How does Sierra Leone rank for share of one-year-olds vaccinated against diphtheria, tetanus and pertussis?
- Sierra Leone ranks 94th out of 194 countries with data for 2024.
- Is share of one-year-olds vaccinated against diphtheria, tetanus and pertussis rising or falling in Sierra Leone?
- Over the last ten years it is up 9.6%. The long-run trend across the full record is rising.
- Where does this Sierra Leone data come from?
- The figures come from WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data, published as part of Share of one-year-olds vaccinated against diphtheria, tetanus and pertussis. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 26 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Share of one-year-olds who have had three doses of the combined diphtheria, tetanus and pertussis vaccine in a given year.