Share of one-year-olds vaccinated against diphtheria, tetanus in Sao Tome and Principe
Sao Tome and Principe: Share of one-year-olds vaccinated against diphtheria, tetanus was 87.0% in 2025. ▲ Rising
Share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Sao Tome and Principe, 1981–2025
Source: WHO & UNICEF (2026); UN, World Population Prospects (2024) – processed by Our World in Data. Measured in %.
Analysis
Sao Tome and Principe recorded 87.0% for share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in 2025.
The figure is down 9.4% over ten years.
Over the whole period, share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Sao Tome and Principe peaked at 99.0% in 2008 and was at its lowest, 26.0%, in 1983.
Sao Tome and Principe ranks 117th of 195 countries on this measure, in the middle of the range.
The long-run direction has been consistently rising across the 45 years of available data.
Share of one-year-olds vaccinated against diphtheria, tetanus in Sao Tome and Principe, year by year
| Year | % | Change |
|---|---|---|
| 1981 | 42.0% | — |
| 1982 | 34.0% | -19.0% |
| 1983 | 26.0% | -23.5% |
| 1984 | 49.0% | +88.5% |
| 1985 | 48.0% | -2.0% |
| 1986 | 65.0% | +35.4% |
| 1987 | 72.0% | +10.8% |
| 1988 | 77.0% | +6.9% |
| 1989 | 63.0% | -18.2% |
| 1990 | 92.0% | +46.0% |
| 1991 | 87.0% | -5.4% |
| 1992 | 68.0% | -21.8% |
| 1993 | 60.0% | -11.8% |
| 1994 | 83.0% | +38.3% |
| 1995 | 79.0% | -4.8% |
| 1996 | 68.0% | -13.9% |
| 1997 | 73.0% | +7.4% |
| 1998 | 73.0% | +0.0% |
| 1999 | 78.0% | +6.8% |
| 2000 | 82.0% | +5.1% |
| 2001 | 92.0% | +12.2% |
| 2002 | 92.0% | +0.0% |
| 2003 | 94.0% | +2.2% |
| 2004 | 96.0% | +2.1% |
| 2005 | 97.0% | +1.0% |
| 2006 | 97.0% | +0.0% |
| 2007 | 97.0% | +0.0% |
| 2008 | 99.0% | +2.1% |
| 2009 | 98.0% | -1.0% |
| 2010 | 98.0% | +0.0% |
| 2011 | 96.0% | -2.0% |
| 2012 | 96.0% | +0.0% |
| 2013 | 97.0% | +1.0% |
| 2014 | 95.0% | -2.1% |
| 2015 | 96.0% | +1.1% |
| 2016 | 96.0% | +0.0% |
| 2017 | 95.0% | -1.0% |
| 2018 | 95.0% | +0.0% |
| 2019 | 95.0% | +0.0% |
| 2020 | 96.0% | +1.1% |
| 2021 | 97.0% | +1.0% |
| 2022 | 92.0% | -5.2% |
| 2023 | 87.0% | -5.4% |
| 2024 | 87.0% | +0.0% |
| 2025 | 87.0% | +0.0% |
Sao Tome and Principe compared with similar countries
- Sao Tome and Principe's 87.0% is above the median for lower middle income countries, which is 86.0%, 1.0× the median. (47 countries reporting)
- Sao Tome and Principe's 87.0% is above the median for Sub-Saharan Africa, which is 84.0%, 1.0× the median. (48 countries reporting)
Biggest year-on-year movements
Years where Share of one-year-olds vaccinated against diphtheria, tetanus in Sao Tome and Principe changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 1984 | +88.5% | 26.0% | 49.0% |
| 1990 | +46.0% | 63.0% | 92.0% |
| 1994 | +38.3% | 60.0% | 83.0% |
| 1986 | +35.4% | 48.0% | 65.0% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 52.9% | 26.0% | 77.0% | 9 |
| 1990s | 76.1% | 60.0% | 92.0% | 10 |
| 2000s | 94.4% | 82.0% | 99.0% | 10 |
| 2010s | 95.9% | 95.0% | 98.0% | 10 |
| 2020s | 91.0% | 87.0% | 97.0% | 6 |
Countries ranked near Sao Tome and Principe
- 117 Dominican Republic 87.0% compare
- 117 Kiribati 87.0% compare
- 117 Niger 87.0% compare
- 117 Solomon Islands 87.0% compare
More reference data data for Sao Tome and Principe
- Emission Totals - Indirect emissions (N2O) - Manure applied to Soils 0.0038 (2050)
- Emission Totals - Indirect emissions (N2O) - Manure left on Pasture 0.006 (2050)
- Emission Totals - Indirect emissions (N2O) - IPCC Agriculture 0.01 (2050)
- Emission Totals - Indirect emissions (N2O) - Crop Residues 0.0003 (2050)
- Emission Totals - Indirect emissions (N2O) - Agricultural Soils 0.01 (2050)
- Emission Totals - Emissions (N2O) - Manure applied to Soils 0.0126 (2050)
- Emission Totals - Emissions (N2O) - Manure Management 0.014 (2050)
- Emission Totals - Emissions (N2O) - Manure left on Pasture 0.0319 (2050)
- Emission Totals - Emissions (N2O) - IPCC Agriculture 0.0601 (2050)
- Emission Totals - Emissions (N2O) - Crop Residues 0.0015 (2050)
Frequently asked questions
- What is share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Sao Tome and Principe?
- Share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Sao Tome and Principe was 87.0% in 2025, according to WHO & UNICEF (2026); 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 Sao Tome and Principe?
- The highest recorded value was 99.0% in 2008.
- What is the lowest share of one-year-olds vaccinated against diphtheria, tetanus and pertussis recorded in Sao Tome and Principe?
- The lowest recorded value was 26.0% in 1983.
- How does Sao Tome and Principe rank for share of one-year-olds vaccinated against diphtheria, tetanus and pertussis?
- Sao Tome and Principe ranks 117th out of 195 countries with data for 2025.
- Is share of one-year-olds vaccinated against diphtheria, tetanus and pertussis rising or falling in Sao Tome and Principe?
- Over the last ten years it is down 9.4%. The long-run trend across the full record is rising.
- Where does this Sao Tome and Principe data come from?
- The figures come from WHO & UNICEF (2026); 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 — 45 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.