Malaysia vs Sierra Leone: Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus
Malaysia
21,500 one-year-olds
in 2023
Sierra Leone
21,194 one-year-olds
in 2023
Malaysia rank
76th
Sierra Leone rank
77th
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus over time
- Malaysia
- Sierra Leone
How they compare
Malaysia currently reports 21,500 one-year-olds against 21,194 one-year-olds in Sierra Leone, a difference of 306 one-year-olds.
The two have swapped places 3 times across 25 shared years of data; in 1999 it was Sierra Leone ahead.
Malaysia ranks 76th and Sierra Leone ranks 77th of 194 countries.
Sierra Leone has averaged higher in every one of the 4 decades both report.
Head to head by decade
| Decade | Malaysia | Sierra Leone | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 15,890 one-year-olds | 90,195 one-year-olds | 74,305 one-year-olds | Sierra Leone |
| 2000s | 20,249 one-year-olds | 69,010 one-year-olds | 48,761 one-year-olds | Sierra Leone |
| 2010s | 12,157 one-year-olds | 24,183 one-year-olds | 12,026 one-year-olds | Sierra Leone |
| 2020s | 16,941 one-year-olds | 20,370 one-year-olds | 3,429 one-year-olds | Sierra Leone |
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, Malaysia or Sierra Leone?
- Malaysia, at 21,500 one-year-olds against 21,194 one-year-olds in Sierra Leone as of 2023.
- What is the difference in number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus between Malaysia and Sierra Leone?
- 306 one-year-olds, with Malaysia ahead.
- How many years of comparable data are there for Malaysia and Sierra Leone?
- 25 years are reported by both, from 1999 to 2023.
- How do Malaysia and Sierra Leone rank globally for number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus?
- Malaysia ranks 76th 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.