Number of one-year-olds who are not vaccinated against rubella in Tonga
Tonga: Number of one-year-olds who are not vaccinated against rubella was 23.98 one-year-olds in 2023. ◆ Volatile
Number of one-year-olds who are not vaccinated against rubella in Tonga, 2002–2023
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 are not vaccinated against rubella in Tonga is 23.98 one-year-olds, measured in 2023.
Compared with earlier readings it is up 0.6% on the previous year and down 13.8% over ten years.
Over the whole period, number of one-year-olds who are not vaccinated against rubella in Tonga peaked at 289 one-year-olds in 2002 and was at its lowest, 23.6 one-year-olds, in 2021.
That places Tonga 165th out of 170 countries with data for 2023, putting it in the bottom quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Number of one-year-olds who are not vaccinated against rubella in Tonga, year by year
| Year | one-year-olds | Change |
|---|---|---|
| 2002 | 289 one-year-olds | — |
| 2003 | 28.94 one-year-olds | -90.0% |
| 2004 | 29.29 one-year-olds | +1.2% |
| 2005 | 29.59 one-year-olds | +1.0% |
| 2006 | 29.65 one-year-olds | +0.2% |
| 2007 | 29.5 one-year-olds | -0.5% |
| 2008 | 29.19 one-year-olds | -1.1% |
| 2009 | 28.64 one-year-olds | -1.9% |
| 2010 | 28.33 one-year-olds | -1.1% |
| 2011 | 29.21 one-year-olds | +3.1% |
| 2012 | 145.1 one-year-olds | +396.7% |
| 2013 | 27.83 one-year-olds | -80.8% |
| 2014 | 27.38 one-year-olds | -1.6% |
| 2015 | 27.16 one-year-olds | -0.8% |
| 2016 | 53.84 one-year-olds | +98.2% |
| 2017 | 25.99 one-year-olds | -51.7% |
| 2018 | 24.98 one-year-olds | -3.9% |
| 2019 | 24.33 one-year-olds | -2.6% |
| 2020 | 23.81 one-year-olds | -2.1% |
| 2021 | 23.6 one-year-olds | -0.9% |
| 2022 | 23.84 one-year-olds | +1.0% |
| 2023 | 23.98 one-year-olds | +0.6% |
Tonga compared with similar countries
- Tonga's 23.98 one-year-olds is below the median for upper middle income countries, which is 5,054 one-year-olds, 0% of the median. (55 countries reporting)
- Tonga's 23.98 one-year-olds is below the median for East Asia & Pacific, which is 6,699 one-year-olds, 0% of the median. (29 countries reporting)
Biggest year-on-year movements
Years where Number of one-year-olds who are not vaccinated against rubella in Tonga 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 |
|---|---|---|---|
| 2012 | +396.7% | 29.21 one-year-olds | 145.1 one-year-olds |
| 2016 | +98.2% | 27.16 one-year-olds | 53.84 one-year-olds |
| 2003 | -90.0% | 289 one-year-olds | 28.94 one-year-olds |
| 2013 | -80.8% | 145.1 one-year-olds | 27.83 one-year-olds |
| 2017 | -51.7% | 53.84 one-year-olds | 25.99 one-year-olds |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 61.73 one-year-olds | 28.64 one-year-olds | 289 one-year-olds | 8 |
| 2010s | 41.41 one-year-olds | 24.33 one-year-olds | 145.1 one-year-olds | 10 |
| 2020s | 23.81 one-year-olds | 23.6 one-year-olds | 23.98 one-year-olds | 4 |
Countries ranked near Tonga
- 162 Cook Islands 30.08 one-year-olds compare
- 163 Saint Kitts and Nevis 27.95 one-year-olds compare
- 164 San Marino 24.31 one-year-olds compare
- 166 Palau 7.84 one-year-olds compare
- 167 Nauru 6.18 one-year-olds compare
- 168 Andorra 4.48 one-year-olds compare
More health data for Tonga
- Un projection of annual infant deaths, annual growth rate -33.33 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate 2.33 % change on previous year (2090)
- 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)
- Neonatal tetanus - number of reported cases, gaps filled 0 (2025)
- Population ages 00-04, female, annual growth rate -1.42 % change on previous year (2025)
- Population ages 00-04, female, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 00-04, female, per capita 0.0535 units per person (2025)
- Population ages 00-04, male, annual growth rate -1.36 % change on previous year (2025)
- Population ages 00-04, male, per unit of GDP 0 units per US$ of GDP (2025)
Frequently asked questions
- What is number of one-year-olds who are not vaccinated against rubella in Tonga?
- Number of one-year-olds who are not vaccinated against rubella 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 are not vaccinated against rubella recorded in Tonga?
- The highest recorded value was 289 one-year-olds in 2002.
- What is the lowest number of one-year-olds who are not vaccinated against rubella 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 are not vaccinated against rubella?
- Tonga ranks 165th out of 170 countries with data for 2023.
- Is number of one-year-olds who are not vaccinated against rubella rising or falling in Tonga?
- Over the last ten years it is down 13.8%. 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 are not vaccinated against rubella. Statizoid updates them automatically from the source API.
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About this data
Number of one-year-olds who have not had one dose of rubella vaccine in a given year.