Number of one-year-olds who have not received the inactivated polio vaccine in Tonga
Tonga: Number of one-year-olds who have not received the inactivated polio vaccine was 23.98 one-year-olds in 2023. ◆ Volatile
Number of one-year-olds who have not received the inactivated polio vaccine in Tonga, 2015–2023
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 Tonga is 23.98 one-year-olds, measured in 2023.
The figure is up 0.6% on the previous year and down 98.7% over ten years.
Over the whole period, number of one-year-olds who have not received the inactivated polio vaccine in Tonga peaked at 1,793 one-year-olds in 2015 and was at its lowest, 23.6 one-year-olds, in 2021.
Tonga ranks 183rd of 194 countries on this measure, in the bottom quarter.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2010s | 395.11 one-year-olds | 24.33 one-year-olds | 1,793 one-year-olds | 5 |
| 2020s | 23.81 one-year-olds | 23.6 one-year-olds | 23.98 one-year-olds | 4 |
Countries ranked near Tonga
- 180 Malta 43.59 one-year-olds compare
- 181 Bahamas 43.43 one-year-olds compare
- 182 Cook Islands 26.32 one-year-olds compare
- 184 Antigua and Barbuda 22.18 one-year-olds compare
- 185 Marshall Islands 16.86 one-year-olds compare
- 186 San Marino 15.47 one-year-olds compare
More health data for Tonga
- Estimated changes in temperature-related death rates compared to projected death rates 834.5 deaths per 1,000 people (2090)
- Number of infants who die before age 1 2 deaths (2100)
- Deaths in armed conflicts based on where they occurred 0 deaths (2026)
- Deaths in armed conflicts by region 0 deaths (2026)
- Age population, age 25, male, interpolated 698 (2025)
- Age population, age 25, female, interpolated 842 (2025)
- Age population, age 24, male, interpolated 804 (2025)
- Age population, age 24, female, interpolated 908 (2025)
- Age population, age 23, male, interpolated 865 (2025)
- Age population, age 23, female, interpolated 951 (2025)
Frequently asked questions
- What is number of one-year-olds who have not received the inactivated polio vaccine in Tonga?
- Number of one-year-olds who have not received the inactivated polio vaccine in Tonga was 23.98 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 Tonga?
- The highest recorded value was 1,793 one-year-olds in 2015.
- What is the lowest number of one-year-olds who have not received the inactivated polio vaccine recorded in Tonga?
- The lowest recorded value was 23.6 one-year-olds in 2021.
- How does Tonga rank for number of one-year-olds who have not received the inactivated polio vaccine?
- Tonga ranks 183rd 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 Tonga?
- Over the last ten years it is down 98.7%. The long-run trend across the full record is volatile.
- Where does this Tonga 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.