Italy vs Sierra Leone: Number of one-year-olds who are not vaccinated against polio
Italy
20,403 one-year-olds
in 2023
Sierra Leone
21,194 one-year-olds
in 2023
Italy rank
83rd
Sierra Leone rank
80th
Number of one-year-olds who are not vaccinated against polio over time
- Italy
- Sierra Leone
How they compare
Sierra Leone currently reports 21,194 one-year-olds against 20,403 one-year-olds in Italy, a difference of 791 one-year-olds.
The two have swapped places 6 times across 25 shared years of data; in 1999 it was Sierra Leone ahead.
Italy ranks 83rd and Sierra Leone ranks 80th of 194 countries.
Across the 4 decades both report, Italy averaged higher in 2 and Sierra Leone in 2.
Head to head by decade
| Decade | Italy | Sierra Leone | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 15,717 one-year-olds | 61,712 one-year-olds | 45,995 one-year-olds | Sierra Leone |
| 2000s | 18,593 one-year-olds | 69,688 one-year-olds | 51,095 one-year-olds | Sierra Leone |
| 2010s | 25,027 one-year-olds | 24,816 one-year-olds | 211.11 one-year-olds | Italy |
| 2020s | 22,903 one-year-olds | 22,105 one-year-olds | 797.78 one-year-olds | Italy |
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, Italy or Sierra Leone?
- Sierra Leone, at 21,194 one-year-olds against 20,403 one-year-olds in Italy as of 2023.
- What is the difference in number of one-year-olds who are not vaccinated against polio between Italy and Sierra Leone?
- 791 one-year-olds, with Sierra Leone ahead.
- How many years of comparable data are there for Italy and Sierra Leone?
- 25 years are reported by both, from 1999 to 2023.
- How do Italy and Sierra Leone rank globally for number of one-year-olds who are not vaccinated against polio?
- Italy ranks 83rd and Sierra Leone ranks 80th 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.