Colombia vs Zambia: Number of one-year-olds who are not vaccinated against polio
Colombia
70,990 one-year-olds
in 2023
Zambia
57,778 one-year-olds
in 2023
Colombia rank
50th
Zambia rank
53rd
Number of one-year-olds who are not vaccinated against polio over time
- Colombia
- Zambia
How they compare
Colombia currently reports 70,990 one-year-olds against 57,778 one-year-olds in Zambia, a difference of 13,212 one-year-olds.
That makes Colombia's figure about 1.2 times Zambia's.
The two have swapped places 10 times across 41 shared years of data; in 1983 it was Colombia ahead.
Colombia ranks 50th and Zambia ranks 53rd of 194 countries.
Across the 5 decades both report, Colombia averaged higher in 4 and Zambia in 1.
Head to head by decade
| Decade | Colombia | Zambia | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 238,061 one-year-olds | 88,201 one-year-olds | 149,860 one-year-olds | Colombia |
| 1990s | 123,049 one-year-olds | 53,384 one-year-olds | 69,665 one-year-olds | Colombia |
| 2000s | 89,441 one-year-olds | 65,986 one-year-olds | 23,455 one-year-olds | Colombia |
| 2010s | 68,537 one-year-olds | 91,292 one-year-olds | 22,755 one-year-olds | Zambia |
| 2020s | 88,754 one-year-olds | 70,212 one-year-olds | 18,542 one-year-olds | Colombia |
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, Colombia or Zambia?
- Colombia, at 70,990 one-year-olds against 57,778 one-year-olds in Zambia as of 2023.
- What is the difference in number of one-year-olds who are not vaccinated against polio between Colombia and Zambia?
- 13,212 one-year-olds, with Colombia ahead.
- How many years of comparable data are there for Colombia and Zambia?
- 41 years are reported by both, from 1983 to 2023.
- How do Colombia and Zambia rank globally for number of one-year-olds who are not vaccinated against polio?
- Colombia ranks 50th and Zambia ranks 53rd 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.