Tanzania vs Vietnam: Number of one-year-olds who are not vaccinated against polio
Tanzania
441,878 one-year-olds
in 2023
Vietnam
566,102 one-year-olds
in 2023
Tanzania rank
11th
Vietnam rank
9th
Number of one-year-olds who are not vaccinated against polio over time
- Tanzania
- Vietnam
How they compare
Vietnam currently reports 566,102 one-year-olds against 441,878 one-year-olds in Tanzania, a difference of 124,224 one-year-olds.
That makes Vietnam's figure about 1.3 times Tanzania's.
The two have swapped places 8 times across 41 shared years of data; in 1983 it was Vietnam ahead.
Tanzania ranks 11th and Vietnam ranks 9th of 194 countries.
Across the 5 decades both report, Tanzania averaged higher in 4 and Vietnam in 1.
Head to head by decade
| Decade | Tanzania | Vietnam | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 301,747 one-year-olds | 1.05 million one-year-olds | 752,459 one-year-olds | Vietnam |
| 1990s | 223,192 one-year-olds | 135,973 one-year-olds | 87,219 one-year-olds | Tanzania |
| 2000s | 192,798 one-year-olds | 75,667 one-year-olds | 117,130 one-year-olds | Tanzania |
| 2010s | 182,477 one-year-olds | 92,492 one-year-olds | 89,984 one-year-olds | Tanzania |
| 2020s | 602,182 one-year-olds | 393,820 one-year-olds | 208,362 one-year-olds | Tanzania |
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 polio, Tanzania or Vietnam?
- Vietnam, at 566,102 one-year-olds against 441,878 one-year-olds in Tanzania as of 2023.
- What is the difference in number of one-year-olds who are not vaccinated against polio between Tanzania and Vietnam?
- 124,224 one-year-olds, with Vietnam ahead.
- How many years of comparable data are there for Tanzania and Vietnam?
- 41 years are reported by both, from 1983 to 2023.
- How do Tanzania and Vietnam rank globally for number of one-year-olds who are not vaccinated against polio?
- Tanzania ranks 11th and Vietnam ranks 9th 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 polio. 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 the third dose of either the oral or inactivated polio vaccine in a given year.