Chad vs Guinea-Bissau: Share of one-year-olds who are vaccinated against polio
Chad
67.0%
in 2024
Guinea-Bissau
68.0%
in 2024
Chad rank
173rd
Guinea-Bissau rank
172nd
Share of one-year-olds who are vaccinated against polio over time
- Chad
- Guinea-Bissau
How they compare
Guinea-Bissau currently reports 68.0% against 67.0% in Chad, a difference of 1.0%.
The two have swapped places 2 times across 41 shared years of data; in 1984 it was Guinea-Bissau ahead.
Chad ranks 173rd and Guinea-Bissau ranks 172nd of 194 countries.
Across the 5 decades both report, Chad averaged higher in 1 and Guinea-Bissau in 4.
Head to head by decade
| Decade | Chad | Guinea-Bissau | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 10.3% | 41.3% | 31.0% | Guinea-Bissau |
| 1990s | 20.3% | 58.4% | 38.1% | Guinea-Bissau |
| 2000s | 34.0% | 68.0% | 34.0% | Guinea-Bissau |
| 2010s | 45.5% | 80.9% | 35.4% | Guinea-Bissau |
| 2020s | 60.0% | 56.0% | 4.0% | Chad |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher share of one-year-olds who are vaccinated against polio, Chad or Guinea-Bissau?
- Guinea-Bissau, at 68.0% against 67.0% in Chad as of 2024.
- What is the difference in share of one-year-olds who are vaccinated against polio between Chad and Guinea-Bissau?
- 1.0%, with Guinea-Bissau ahead.
- How many years of comparable data are there for Chad and Guinea-Bissau?
- 41 years are reported by both, from 1984 to 2024.
- How do Chad and Guinea-Bissau rank globally for share of one-year-olds who are vaccinated against polio?
- Chad ranks 173rd and Guinea-Bissau ranks 172nd 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 Share of one-year-olds who are vaccinated against polio. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Share of one-year-olds who have had the third dose of either the oral or inactivated polio vaccine in a given year.