Iran vs Portugal: Share of one-year-olds who are vaccinated against polio
Iran
99.0%
in 2024
Portugal
99.0%
in 2024
Iran rank
1st
Portugal rank
1st
Share of one-year-olds who are vaccinated against polio over time
- Iran
- Portugal
How they compare
Iran currently reports 99.0% against 99.0% in Portugal, a difference of 0.0%.
The two have swapped places 15 times across 45 shared years of data; in 1980 it was Iran ahead.
Iran ranks 1st and Portugal ranks 1st of 194 countries.
Across the 5 decades both report, Iran averaged higher in 4 and Portugal in 1.
Head to head by decade
| Decade | Iran | Portugal | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 57.6% | 45.0% | 12.6% | Iran |
| 1990s | 96.2% | 94.1% | 2.1% | Iran |
| 2000s | 98.0% | 95.8% | 2.2% | Iran |
| 2010s | 98.8% | 98.0% | 0.8% | Iran |
| 2020s | 98.8% | 99.0% | 0.2% | Portugal |
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, Iran or Portugal?
- Iran, at 99.0% against 99.0% in Portugal as of 2024.
- What is the difference in share of one-year-olds who are vaccinated against polio between Iran and Portugal?
- 0.0%, with Iran ahead.
- How many years of comparable data are there for Iran and Portugal?
- 45 years are reported by both, from 1980 to 2024.
- How do Iran and Portugal rank globally for share of one-year-olds who are vaccinated against polio?
- Iran ranks 1st and Portugal ranks 1st of 194 countries.
- Where does this data come from?
- WHO & UNICEF (2026); UN, World Population Prospects (2024) β 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.