Bulgaria vs Republic of Korea: Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus
Bulgaria
4,925 one-year-olds
in 2023
Republic of Korea
5,087 one-year-olds
in 2023
Bulgaria rank
113th
Republic of Korea rank
110th
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus over time
- Bulgaria
- Republic of Korea
How they compare
Republic of Korea currently reports 5,087 one-year-olds against 4,925 one-year-olds in Bulgaria, a difference of 162 one-year-olds.
The two have swapped places 4 times across 43 shared years of data; in 1981 it was Republic of Korea ahead.
Bulgaria ranks 113th and Republic of Korea ranks 110th of 194 countries.
Across the 5 decades both report, Bulgaria averaged higher in 1 and Republic of Korea in 4.
Head to head by decade
| Decade | Bulgaria | Republic of Korea | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 1,208 one-year-olds | 227,727 one-year-olds | 226,518 one-year-olds | Republic of Korea |
| 1990s | 2,856 one-year-olds | 103,056 one-year-olds | 100,200 one-year-olds | Republic of Korea |
| 2000s | 3,694 one-year-olds | 24,951 one-year-olds | 21,258 one-year-olds | Republic of Korea |
| 2010s | 4,918 one-year-olds | 8,965 one-year-olds | 4,047 one-year-olds | Republic of Korea |
| 2020s | 5,628 one-year-olds | 5,586 one-year-olds | 41.89 one-year-olds | Bulgaria |
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, Bulgaria or Republic of Korea?
- Republic of Korea, at 5,087 one-year-olds against 4,925 one-year-olds in Bulgaria as of 2023.
- What is the difference in number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus between Bulgaria and Republic of Korea?
- 162 one-year-olds, with Republic of Korea ahead.
- How many years of comparable data are there for Bulgaria and Republic of Korea?
- 43 years are reported by both, from 1981 to 2023.
- How do Bulgaria and Republic of Korea rank globally for number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus?
- Bulgaria ranks 113th and Republic of Korea ranks 110th 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.