Cook Islands vs Tonga: Share of one-year-olds vaccinated against measles
Cook Islands
99.0%
in 2024
Tonga
99.0%
in 2024
Cook Islands rank
1st
Tonga rank
1st
Share of one-year-olds vaccinated against measles over time
- Cook Islands
- Tonga
How they compare
Cook Islands currently reports 99.0% against 99.0% in Tonga, a difference of 0.0%.
The two have swapped places 17 times across 42 shared years of data; in 1983 it was Cook Islands ahead.
Cook Islands ranks 1st and Tonga ranks 1st of 194 countries.
Across the 5 decades both report, Cook Islands averaged higher in 1 and Tonga in 4.
Head to head by decade
| Decade | Cook Islands | Tonga | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 79.1% | 68.7% | 10.4% | Cook Islands |
| 1990s | 85.6% | 91.5% | 5.9% | Tonga |
| 2000s | 92.1% | 97.1% | 5.0% | Tonga |
| 2010s | 96.5% | 98.5% | 2.0% | Tonga |
| 2020s | 81.0% | 99.0% | 18.0% | Tonga |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher share of one-year-olds vaccinated against measles, Cook Islands or Tonga?
- Cook Islands, at 99.0% against 99.0% in Tonga as of 2024.
- What is the difference in share of one-year-olds vaccinated against measles between Cook Islands and Tonga?
- 0.0%, with Cook Islands ahead.
- How many years of comparable data are there for Cook Islands and Tonga?
- 42 years are reported by both, from 1983 to 2024.
- How do Cook Islands and Tonga rank globally for share of one-year-olds vaccinated against measles?
- Cook Islands 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 vaccinated against measles. 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 first dose of the measles vaccine in a given year.