Italy vs Sierra Leone: Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus
Italy
20,403 one-year-olds
in 2023
Sierra Leone
21,194 one-year-olds
in 2023
Italy rank
80th
Sierra Leone rank
77th
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus 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 80th and Sierra Leone ranks 77th of 194 countries.
Across the 4 decades both report, Italy averaged higher in 1 and Sierra Leone in 3.
Head to head by decade
| Decade | Italy | Sierra Leone | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 26,195 one-year-olds | 90,195 one-year-olds | 64,000 one-year-olds | Sierra Leone |
| 2000s | 30,877 one-year-olds | 69,010 one-year-olds | 38,133 one-year-olds | Sierra Leone |
| 2010s | 23,986 one-year-olds | 24,183 one-year-olds | 196.64 one-year-olds | Sierra Leone |
| 2020s | 22,903 one-year-olds | 20,370 one-year-olds | 2,532 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 diphtheria, pertussis and tetanus, 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 diphtheria, pertussis and tetanus 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 diphtheria, pertussis and tetanus?
- Italy ranks 80th and Sierra Leone ranks 77th 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 diphtheria, pertussis and tetanus. 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 three doses of the combined diphtheria, tetanus and pertussis vaccine in a given year.