Samoa vs Sao Tome and Principe: Number of one-year-olds who are not vaccinated against polio
Samoa
883.2 one-year-olds
in 2023
Sao Tome and Principe
937.65 one-year-olds
in 2023
Samoa rank
152nd
Sao Tome and Principe rank
149th
Number of one-year-olds who are not vaccinated against polio over time
- Samoa
- Sao Tome and Principe
How they compare
Sao Tome and Principe currently reports 937.65 one-year-olds against 883.2 one-year-olds in Samoa, a difference of 54.45 one-year-olds.
That makes Sao Tome and Principe's figure about 1.1 times Samoa's.
The two have swapped places 4 times across 43 shared years of data; in 1981 it was Sao Tome and Principe ahead.
Samoa ranks 152nd and Sao Tome and Principe ranks 149th of 194 countries.
Across the 5 decades both report, Samoa averaged higher in 3 and Sao Tome and Principe in 2.
Head to head by decade
| Decade | Samoa | Sao Tome and Principe | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 745.76 one-year-olds | 1,657 one-year-olds | 911.32 one-year-olds | Sao Tome and Principe |
| 1990s | 382.94 one-year-olds | 1,158 one-year-olds | 774.58 one-year-olds | Sao Tome and Principe |
| 2000s | 1,540 one-year-olds | 238.17 one-year-olds | 1,302 one-year-olds | Samoa |
| 2010s | 1,628 one-year-olds | 248.62 one-year-olds | 1,379 one-year-olds | Samoa |
| 2020s | 1,017 one-year-olds | 597.9 one-year-olds | 419.04 one-year-olds | Samoa |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher number of one-year-olds who are not vaccinated against polio, Samoa or Sao Tome and Principe?
- Sao Tome and Principe, at 937.65 one-year-olds against 883.2 one-year-olds in Samoa as of 2023.
- What is the difference in number of one-year-olds who are not vaccinated against polio between Samoa and Sao Tome and Principe?
- 54.45 one-year-olds, with Sao Tome and Principe ahead.
- How many years of comparable data are there for Samoa and Sao Tome and Principe?
- 43 years are reported by both, from 1981 to 2023.
- How do Samoa and Sao Tome and Principe rank globally for number of one-year-olds who are not vaccinated against polio?
- Samoa ranks 152nd and Sao Tome and Principe ranks 149th 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 Number of one-year-olds who are not vaccinated against polio. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Number of one-year-olds who have not had the third dose of either the oral or inactivated polio vaccine in a given year.