Chad vs South Africa: Number of one-year-olds who are not vaccinated against polio
Chad
242,358 one-year-olds
in 2023
South Africa
251,724 one-year-olds
in 2023
Chad rank
22nd
South Africa rank
21st
Number of one-year-olds who are not vaccinated against polio over time
- Chad
- South Africa
How they compare
South Africa currently reports 251,724 one-year-olds against 242,358 one-year-olds in Chad, a difference of 9,366 one-year-olds.
The two have swapped places 6 times across 40 shared years of data; in 1984 it was South Africa ahead.
Chad ranks 22nd and South Africa ranks 21st of 194 countries.
Across the 5 decades both report, Chad averaged higher in 3 and South Africa in 2.
Head to head by decade
| Decade | Chad | South Africa | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 194,822 one-year-olds | 299,498 one-year-olds | 104,677 one-year-olds | South Africa |
| 1990s | 240,422 one-year-olds | 270,599 one-year-olds | 30,177 one-year-olds | South Africa |
| 2000s | 283,597 one-year-olds | 264,523 one-year-olds | 19,074 one-year-olds | Chad |
| 2010s | 321,013 one-year-olds | 230,192 one-year-olds | 90,821 one-year-olds | Chad |
| 2020s | 291,546 one-year-olds | 195,522 one-year-olds | 96,024 one-year-olds | Chad |
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, Chad or South Africa?
- South Africa, at 251,724 one-year-olds against 242,358 one-year-olds in Chad as of 2023.
- What is the difference in number of one-year-olds who are not vaccinated against polio between Chad and South Africa?
- 9,366 one-year-olds, with South Africa ahead.
- How many years of comparable data are there for Chad and South Africa?
- 40 years are reported by both, from 1984 to 2023.
- How do Chad and South Africa rank globally for number of one-year-olds who are not vaccinated against polio?
- Chad ranks 22nd and South Africa ranks 21st 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.