Number of one-year-olds who have not received the inactivated polio vaccine in Chad
Chad: Number of one-year-olds who have not received the inactivated polio vaccine was 242,358 one-year-olds in 2023. ▼ Falling
Number of one-year-olds who have not received the inactivated polio vaccine in Chad, 2015–2023
Source: WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data. Measured in one-year-olds.
Analysis
In 2023, number of one-year-olds who have not received the inactivated polio vaccine in Chad stood at 242,358 one-year-olds.
The figure is up 0.6% on the previous year and down 43.9% over ten years.
Over the whole period, number of one-year-olds who have not received the inactivated polio vaccine in Chad peaked at 431,975 one-year-olds in 2015 and was at its lowest, 240,827 one-year-olds, in 2022.
Chad ranks 18th of 194 countries on this measure, in the top 10%.
Number of one-year-olds who have not received the inactivated polio vaccine in Chad, year by year
| Year | one-year-olds | Change |
|---|---|---|
| 2015 | 431,975 one-year-olds | — |
| 2016 | 363,039 one-year-olds | -16.0% |
| 2017 | 369,824 one-year-olds | +1.9% |
| 2018 | 325,634 one-year-olds | -11.9% |
| 2019 | 320,157 one-year-olds | -1.7% |
| 2020 | 309,086 one-year-olds | -3.5% |
| 2021 | 255,635 one-year-olds | -17.3% |
| 2022 | 240,827 one-year-olds | -5.8% |
| 2023 | 242,358 one-year-olds | +0.6% |
Chad compared with similar countries
- Chad's 242,358 one-year-olds is above the median for low income countries, which is 117,638 one-year-olds, 2.1× the median. (25 countries reporting)
- Chad's 242,358 one-year-olds is above the median for Sub-Saharan Africa, which is 58,553 one-year-olds, 4.1× the median. (48 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2010s | 362,126 one-year-olds | 320,157 one-year-olds | 431,975 one-year-olds | 5 |
| 2020s | 261,976 one-year-olds | 240,827 one-year-olds | 309,086 one-year-olds | 4 |
Countries ranked near Chad
More health data for Chad
- Un projection of annual infant deaths, annual growth rate -0.9964 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate 0.6578 % change on previous year (2090)
- Estimated changes in temperature-related death rates compared to projected death rates 1,071 deaths per 1,000 people (2090)
- Number of infants who die before age 1 41,435 deaths (2100)
- Neonatal tetanus - number of reported cases, gaps filled 245 (2025)
- Population ages 00-04, female, annual growth rate 3.76 % change on previous year (2025)
- Population ages 00-04, female, per unit of GDP 0.0001 units per US$ of GDP (2025)
- Population ages 00-04, female, per capita 0.0898 units per person (2025)
- Population ages 00-04, male, annual growth rate 3.77 % change on previous year (2025)
- Population ages 00-04, male, per unit of GDP 0.0001 units per US$ of GDP (2025)
Frequently asked questions
- What is number of one-year-olds who have not received the inactivated polio vaccine in Chad?
- Number of one-year-olds who have not received the inactivated polio vaccine in Chad was 242,358 one-year-olds in 2023, according to WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data.
- What is the highest number of one-year-olds who have not received the inactivated polio vaccine recorded in Chad?
- The highest recorded value was 431,975 one-year-olds in 2015.
- What is the lowest number of one-year-olds who have not received the inactivated polio vaccine recorded in Chad?
- The lowest recorded value was 240,827 one-year-olds in 2022.
- How does Chad rank for number of one-year-olds who have not received the inactivated polio vaccine?
- Chad ranks 18th out of 194 countries with data for 2023.
- Is number of one-year-olds who have not received the inactivated polio vaccine rising or falling in Chad?
- Over the last ten years it is down 43.9%. The long-run trend across the full record is falling.
- Where does this Chad data come from?
- The figures come from WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data, published as part of Number of one-year-olds who have not received the inactivated polio vaccine. Statizoid updates them automatically from the source API.
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About this data
Number of one-year-olds who have not had the first dose of the inactivated polio vaccine in a given year.