Number of one-year-olds who have not received the inactivated polio vaccine in Sao Tome and Principe
Sao Tome and Principe: Number of one-year-olds who have not received the inactivated polio vaccine was 1,188 one-year-olds in 2023. ◆ Volatile
Latest (2023)
1,188 one-year-olds
Change on year
up 49.4%
World rank
141st
of 194 countries
All-time high
3,289 one-year-olds
in 2017
All-time low
178.77 one-year-olds
in 2018
Years of data
8
2016–2023
Number of one-year-olds who have not received the inactivated polio vaccine in Sao Tome and Principe, 2016–2023
Source: WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data. Measured in one-year-olds.
Analysis
The most recent figure for number of one-year-olds who have not received the inactivated polio vaccine in Sao Tome and Principe is 1,188 one-year-olds, measured in 2023.
The figure is up 49.4% on the previous year and down 42.1% over ten years.
Sao Tome and Principe ranks 141st of 194 countries on this measure, in the middle of the range.
Number of one-year-olds who have not received the inactivated polio vaccine in Sao Tome and Principe, year by year
| Year | one-year-olds | Change |
|---|---|---|
| 2016 | 2,052 one-year-olds | — |
| 2017 | 3,289 one-year-olds | +60.2% |
| 2018 | 178.77 one-year-olds | -94.6% |
| 2019 | 293.9 one-year-olds | +64.4% |
| 2020 | 357.6 one-year-olds | +21.7% |
| 2021 | 423.5 one-year-olds | +18.4% |
| 2022 | 795.21 one-year-olds | +87.8% |
| 2023 | 1,188 one-year-olds | +49.4% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2010s | 1,453 one-year-olds | 178.77 one-year-olds | 3,289 one-year-olds | 4 |
| 2020s | 691 one-year-olds | 357.6 one-year-olds | 1,188 one-year-olds | 4 |
Countries ranked near Sao Tome and Principe
More health data for Sao Tome and Principe
- Un projection of annual infant deaths, annual growth rate -6.25 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate 1.35 % change on previous year (2090)
- Estimated changes in temperature-related death rates compared to projected death rates 793.5 deaths per 1,000 people (2090)
- Number of infants who die before age 1 15 deaths (2100)
- Population ages 0-14, female, annual growth rate 0.8948 % change on previous year (2025)
- Population ages 0-14, female, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 0-14, female, per capita 0.1858 units per person (2025)
- Population ages 0-14, male, annual growth rate 1.1 % change on previous year (2025)
- Population ages 0-14, male, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 0-14, male, per capita 0.1887 units per person (2025)
Frequently asked questions
- What is number of one-year-olds who have not received the inactivated polio vaccine in Sao Tome and Principe?
- Number of one-year-olds who have not received the inactivated polio vaccine in Sao Tome and Principe was 1,188 one-year-olds in 2023, according to WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data.
- What is the highest number of one-year-olds who have not received the inactivated polio vaccine recorded in Sao Tome and Principe?
- The highest recorded value was 3,289 one-year-olds in 2017.
- What is the lowest number of one-year-olds who have not received the inactivated polio vaccine recorded in Sao Tome and Principe?
- The lowest recorded value was 178.77 one-year-olds in 2018.
- How does Sao Tome and Principe rank for number of one-year-olds who have not received the inactivated polio vaccine?
- Sao Tome and Principe ranks 141st out of 194 countries with data for 2023.
- Is number of one-year-olds who have not received the inactivated polio vaccine rising or falling in Sao Tome and Principe?
- Over the last ten years it is down 42.1%. The long-run trend across the full record is volatile.
- Where does this Sao Tome and Principe 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 Number of one-year-olds who have not received the inactivated polio vaccine. Statizoid updates them automatically from the source API.
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About this data
Number of one-year-olds who have not had the first dose of the inactivated polio vaccine in a given year.