Share of one-year-olds vaccinated against diphtheria, tetanus in Chad
Chad: Share of one-year-olds vaccinated against diphtheria, tetanus was 71.0% in 2025. ◆ Volatile
Share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Chad, 1983–2025
Source: WHO & UNICEF (2026); UN, World Population Prospects (2024) – processed by Our World in Data. Measured in %.
Analysis
Chad recorded 71.0% for share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in 2025. That is the highest value across all 43 years on record.
That represents a change of up 4.4% on the previous year and up 69.0% over ten years.
Over the whole period, share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Chad peaked at 71.0% in 2025 and was at its lowest, 1.0%, in 1983.
Chad ranks 167th of 195 countries on this measure, in the bottom quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Share of one-year-olds vaccinated against diphtheria, tetanus in Chad, year by year
| Year | % | Change |
|---|---|---|
| 1983 | 1.0% | — |
| 1984 | 3.0% | +200.0% |
| 1985 | 3.0% | +0.0% |
| 1986 | 10.0% | +233.3% |
| 1987 | 14.0% | +40.0% |
| 1988 | 14.0% | +0.0% |
| 1989 | 20.0% | +42.9% |
| 1990 | 20.0% | +0.0% |
| 1991 | 18.0% | -10.0% |
| 1992 | 10.0% | -44.4% |
| 1993 | 13.0% | +30.0% |
| 1994 | 18.0% | +38.5% |
| 1995 | 18.0% | +0.0% |
| 1996 | 20.0% | +11.1% |
| 1997 | 24.0% | +20.0% |
| 1998 | 37.0% | +54.2% |
| 1999 | 45.0% | +21.6% |
| 2000 | 38.0% | -15.6% |
| 2001 | 26.0% | -31.6% |
| 2002 | 25.0% | -3.8% |
| 2003 | 23.0% | -8.0% |
| 2004 | 22.0% | -4.3% |
| 2005 | 26.0% | +18.2% |
| 2006 | 41.0% | +57.7% |
| 2007 | 29.0% | -29.3% |
| 2008 | 19.0% | -34.5% |
| 2009 | 26.0% | +36.8% |
| 2010 | 40.0% | +53.8% |
| 2011 | 33.0% | -17.5% |
| 2012 | 40.0% | +21.2% |
| 2013 | 39.0% | -2.5% |
| 2014 | 36.0% | -7.7% |
| 2015 | 42.0% | +16.7% |
| 2016 | 41.0% | -2.4% |
| 2017 | 41.0% | +0.0% |
| 2018 | 47.0% | +14.6% |
| 2019 | 53.0% | +12.8% |
| 2020 | 55.0% | +3.8% |
| 2021 | 62.0% | +12.7% |
| 2022 | 66.0% | +6.5% |
| 2023 | 67.0% | +1.5% |
| 2024 | 68.0% | +1.5% |
| 2025 | 71.0% | +4.4% |
Chad compared with similar countries
- Chad's 71.0% is below the median for low income countries, which is 82.0%, 87% of the median. (25 countries reporting)
- Chad's 71.0% is below the median for Sub-Saharan Africa, which is 84.0%, 85% of the median. (48 countries reporting)
Biggest year-on-year movements
Years where Share of one-year-olds vaccinated against diphtheria, tetanus in Chad changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 1986 | +233.3% | 3.0% | 10.0% |
| 1984 | +200.0% | 1.0% | 3.0% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 9.3% | 1.0% | 20.0% | 7 |
| 1990s | 22.3% | 10.0% | 45.0% | 10 |
| 2000s | 27.5% | 19.0% | 41.0% | 10 |
| 2010s | 41.2% | 33.0% | 53.0% | 10 |
| 2020s | 64.8% | 55.0% | 71.0% | 6 |
Countries ranked near Chad
- 164 Micronesia (country) 73.0% compare
- 164 South Sudan 73.0% compare
- 166 Somalia 72.0% compare
- 167 Myanmar 71.0% compare
- 167 Philippines 71.0% compare
- 167 Sudan 71.0% compare
More reference data data for Chad
- Emission Totals - Indirect emissions (N2O) - Manure applied to Soils 0.3078 (2050)
- Emission Totals - Indirect emissions (N2O) - Manure left on Pasture 13.52 (2050)
- Emission Totals - Indirect emissions (N2O) - IPCC Agriculture 14.01 (2050)
- Emission Totals - Indirect emissions (N2O) - Crop Residues 0.1797 (2050)
- Emission Totals - Indirect emissions (N2O) - Agricultural Soils 14.01 (2050)
- Emission Totals - Emissions (N2O) - Manure applied to Soils 1.03 (2050)
- Emission Totals - Emissions (N2O) - Manure Management 0.5525 (2050)
- Emission Totals - Emissions (N2O) - Manure left on Pasture 58.55 (2050)
- Emission Totals - Emissions (N2O) - IPCC Agriculture 61.14 (2050)
- Emission Totals - Emissions (N2O) - Crop Residues 0.9785 (2050)
Frequently asked questions
- What is share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Chad?
- Share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Chad was 71.0% in 2025, according to WHO & UNICEF (2026); UN, World Population Prospects (2024) – processed by Our World in Data.
- What is the highest share of one-year-olds vaccinated against diphtheria, tetanus and pertussis recorded in Chad?
- The highest recorded value was 71.0% in 2025.
- What is the lowest share of one-year-olds vaccinated against diphtheria, tetanus and pertussis recorded in Chad?
- The lowest recorded value was 1.0% in 1983.
- How does Chad rank for share of one-year-olds vaccinated against diphtheria, tetanus and pertussis?
- Chad ranks 167th out of 195 countries with data for 2025.
- Is share of one-year-olds vaccinated against diphtheria, tetanus and pertussis rising or falling in Chad?
- Over the last ten years it is up 69.0%. The long-run trend across the full record is volatile.
- Where does this Chad data come from?
- The figures come from WHO & UNICEF (2026); UN, World Population Prospects (2024) – processed by Our World in Data, published as part of Share of one-year-olds vaccinated against diphtheria, tetanus and pertussis. Statizoid updates them automatically from the source API.
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About this data
Share of one-year-olds who have had three doses of the combined diphtheria, tetanus and pertussis vaccine in a given year.