Samoa vs Sao Tome and Principe: Share of one-year-olds who are vaccinated against polio
Samoa
85.0%
in 2024
Sao Tome and Principe
85.0%
in 2024
Samoa rank
128th
Sao Tome and Principe rank
128th
Share of one-year-olds who are vaccinated against polio over time
- Samoa
- Sao Tome and Principe
How they compare
Samoa currently reports 85.0% against 85.0% in Sao Tome and Principe, a difference of 0.0%.
The two have swapped places 3 times across 44 shared years of data; in 1981 it was Samoa ahead.
Samoa ranks 128th and Sao Tome and Principe ranks 128th of 194 countries.
Across the 5 decades both report, Samoa averaged higher in 2 and Sao Tome and Principe in 3.
Head to head by decade
| Decade | Samoa | Sao Tome and Principe | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 85.9% | 56.9% | 29.0% | Samoa |
| 1990s | 92.7% | 74.5% | 18.2% | Samoa |
| 2000s | 71.0% | 95.2% | 24.2% | Sao Tome and Principe |
| 2010s | 72.1% | 95.9% | 23.8% | Sao Tome and Principe |
| 2020s | 82.8% | 89.2% | 6.4% | Sao Tome and Principe |
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, Samoa or Sao Tome and Principe?
- Samoa, at 85.0% against 85.0% in Sao Tome and Principe as of 2024.
- What is the difference in share of one-year-olds who are vaccinated against polio between Samoa and Sao Tome and Principe?
- 0.0%, with Samoa ahead.
- How many years of comparable data are there for Samoa and Sao Tome and Principe?
- 44 years are reported by both, from 1981 to 2024.
- How do Samoa and Sao Tome and Principe rank globally for share of one-year-olds who are vaccinated against polio?
- Samoa ranks 128th and Sao Tome and Principe ranks 128th 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.