Portugal vs Singapore: Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus
Portugal
824.42 one-year-olds
in 2023
Singapore
906.12 one-year-olds
in 2023
Portugal rank
155th
Singapore rank
152nd
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus over time
- Portugal
- Singapore
How they compare
Singapore currently reports 906.12 one-year-olds against 824.42 one-year-olds in Portugal, a difference of 81.7 one-year-olds.
That makes Singapore's figure about 1.1 times Portugal's.
The two have swapped places 7 times across 44 shared years of data; in 1980 it was Portugal ahead.
Portugal ranks 155th and Singapore ranks 152nd of 194 countries.
Across the 5 decades both report, Portugal averaged higher in 4 and Singapore in 1.
Head to head by decade
| Decade | Portugal | Singapore | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 29,685 one-year-olds | 5,864 one-year-olds | 23,821 one-year-olds | Portugal |
| 1990s | 6,097 one-year-olds | 3,167 one-year-olds | 2,930 one-year-olds | Portugal |
| 2000s | 3,817 one-year-olds | 1,738 one-year-olds | 2,079 one-year-olds | Portugal |
| 2010s | 1,730 one-year-olds | 1,616 one-year-olds | 114.3 one-year-olds | Portugal |
| 2020s | 845.14 one-year-olds | 1,023 one-year-olds | 177.99 one-year-olds | Singapore |
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, Portugal or Singapore?
- Singapore, at 906.12 one-year-olds against 824.42 one-year-olds in Portugal as of 2023.
- What is the difference in number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus between Portugal and Singapore?
- 81.7 one-year-olds, with Singapore ahead.
- How many years of comparable data are there for Portugal and Singapore?
- 44 years are reported by both, from 1980 to 2023.
- How do Portugal and Singapore rank globally for number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus?
- Portugal ranks 155th and Singapore ranks 152nd 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.