Portugal vs Tonga: Share of one-year-olds who are vaccinated against polio
Portugal
99.0%
in 2024
Tonga
99.0%
in 2024
Portugal rank
1st
Tonga rank
1st
Share of one-year-olds who are vaccinated against polio over time
- Portugal
- Tonga
How they compare
Portugal currently reports 99.0% against 99.0% in Tonga, a difference of 0.0%.
The two have swapped places 12 times across 45 shared years of data; in 1980 it was Tonga ahead.
Portugal ranks 1st and Tonga ranks 1st of 194 countries.
Across the 5 decades both report, Portugal averaged higher in 1 and Tonga in 3.
Head to head by decade
| Decade | Portugal | Tonga | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 45.0% | 66.6% | 21.6% | Tonga |
| 1990s | 94.1% | 94.9% | 0.8% | Tonga |
| 2000s | 95.8% | 97.2% | 1.4% | Tonga |
| 2010s | 98.0% | 97.9% | 0.1% | Portugal |
| 2020s | 99.0% | 99.0% | 0.0% | — |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher share of one-year-olds who are vaccinated against polio, Portugal or Tonga?
- Portugal, at 99.0% against 99.0% in Tonga as of 2024.
- What is the difference in share of one-year-olds who are vaccinated against polio between Portugal and Tonga?
- 0.0%, with Portugal ahead.
- How many years of comparable data are there for Portugal and Tonga?
- 45 years are reported by both, from 1980 to 2024.
- How do Portugal and Tonga rank globally for share of one-year-olds who are vaccinated against polio?
- Portugal ranks 1st and Tonga ranks 1st of 194 countries.
- Where does this data come from?
- WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data, published as Share of one-year-olds who are vaccinated against polio. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Share of one-year-olds who have had the third dose of either the oral or inactivated polio vaccine in a given year.