Tanzania, United Republic of vs Viet Nam: Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus
Tanzania, United Republic of
375,596 one-year-olds
in 2023
Viet Nam
495,339 one-year-olds
in 2023
Tanzania, United Republic of rank
13th
Viet Nam rank
10th
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus over time
- Tanzania, United Republic of
- Viet Nam
How they compare
Viet Nam currently reports 495,339 one-year-olds against 375,596 one-year-olds in Tanzania, United Republic of, a difference of 119,743 one-year-olds.
That makes Viet Nam's figure about 1.3 times Tanzania, United Republic of's.
The two have swapped places 10 times across 41 shared years of data; in 1983 it was Viet Nam ahead.
Tanzania, United Republic of ranks 13th and Viet Nam ranks 10th of 194 countries.
Across the 5 decades both report, Tanzania, United Republic of averaged higher in 3 and Viet Nam in 2.
Head to head by decade
| Decade | Tanzania, United Republic of | Viet Nam | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 262,030 one-year-olds | 1.01 million one-year-olds | 747,392 one-year-olds | Viet Nam |
| 1990s | 209,259 one-year-olds | 139,515 one-year-olds | 69,744 one-year-olds | Tanzania, United Republic of |
| 2000s | 171,315 one-year-olds | 94,849 one-year-olds | 76,466 one-year-olds | Tanzania, United Republic of |
| 2010s | 145,744 one-year-olds | 171,897 one-year-olds | 26,152 one-year-olds | Viet Nam |
| 2020s | 285,494 one-year-olds | 241,218 one-year-olds | 44,276 one-year-olds | Tanzania, United Republic of |
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, Tanzania, United Republic of or Viet Nam?
- Viet Nam, at 495,339 one-year-olds against 375,596 one-year-olds in Tanzania, United Republic of as of 2023.
- What is the difference in number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus between Tanzania, United Republic of and Viet Nam?
- 119,743 one-year-olds, with Viet Nam ahead.
- How many years of comparable data are there for Tanzania, United Republic of and Viet Nam?
- 41 years are reported by both, from 1983 to 2023.
- How do Tanzania, United Republic of and Viet Nam rank globally for number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus?
- Tanzania, United Republic of ranks 13th and Viet Nam ranks 10th 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.