Number of one-year-olds who are not vaccinated against diphtheria in Chad
Chad: Number of one-year-olds who are not vaccinated against diphtheria was 0.0125 one-year-olds per person in 2023. ▼ Falling
Number of one-year-olds who are not vaccinated against diphtheria in Chad, 1983–2023
Source: Statizoid (derived). Measured in one-year-olds per person.
Analysis
In 2023, number of one-year-olds who are not vaccinated against diphtheria in Chad stood at 0.0125 one-year-olds per person. That is the lowest value across all 41 years on record.
That represents a change of down 3.9% on the previous year and down 50.5% over ten years.
Over the whole period, number of one-year-olds who are not vaccinated against diphtheria in Chad peaked at 0.0403 one-year-olds per person in 1985 and was at its lowest, 0.0125 one-year-olds per person, in 2023.
That places Chad 7th out of 192 countries with data for 2023, putting it in the top 10%.
The long-run direction has been consistently falling across the 41 years of available data.
Number of one-year-olds who are not vaccinated against diphtheria in Chad, year by year
| Year | one-year-olds per person | Change |
|---|---|---|
| 1983 | 0.0364 one-year-olds per person | — |
| 1984 | 0.0379 one-year-olds per person | +4.1% |
| 1985 | 0.0403 one-year-olds per person | +6.3% |
| 1986 | 0.0367 one-year-olds per person | -8.9% |
| 1987 | 0.0343 one-year-olds per person | -6.8% |
| 1988 | 0.0348 one-year-olds per person | +1.5% |
| 1989 | 0.0332 one-year-olds per person | -4.6% |
| 1990 | 0.0339 one-year-olds per person | +2.3% |
| 1991 | 0.035 one-year-olds per person | +3.4% |
| 1992 | 0.0382 one-year-olds per person | +8.9% |
| 1993 | 0.0376 one-year-olds per person | -1.3% |
| 1994 | 0.0365 one-year-olds per person | -3.0% |
| 1995 | 0.0357 one-year-olds per person | -2.3% |
| 1996 | 0.0339 one-year-olds per person | -5.0% |
| 1997 | 0.0327 one-year-olds per person | -3.5% |
| 1998 | 0.0274 one-year-olds per person | -16.2% |
| 1999 | 0.0238 one-year-olds per person | -13.1% |
| 2000 | 0.0268 one-year-olds per person | +12.4% |
| 2001 | 0.0319 one-year-olds per person | +19.0% |
| 2002 | 0.0322 one-year-olds per person | +1.0% |
| 2003 | 0.0327 one-year-olds per person | +1.5% |
| 2004 | 0.0327 one-year-olds per person | -0.0% |
| 2005 | 0.0311 one-year-olds per person | -4.8% |
| 2006 | 0.0251 one-year-olds per person | -19.3% |
| 2007 | 0.0303 one-year-olds per person | +20.8% |
| 2008 | 0.0345 one-year-olds per person | +13.8% |
| 2009 | 0.0313 one-year-olds per person | -9.1% |
| 2010 | 0.0253 one-year-olds per person | -19.3% |
| 2011 | 0.0281 one-year-olds per person | +11.3% |
| 2012 | 0.0251 one-year-olds per person | -10.9% |
| 2013 | 0.0254 one-year-olds per person | +1.1% |
| 2014 | 0.0264 one-year-olds per person | +4.1% |
| 2015 | 0.0238 one-year-olds per person | -9.9% |
| 2016 | 0.024 one-year-olds per person | +1.1% |
| 2017 | 0.0237 one-year-olds per person | -1.4% |
| 2018 | 0.0209 one-year-olds per person | -11.5% |
| 2019 | 0.0184 one-year-olds per person | -12.1% |
| 2020 | 0.0176 one-year-olds per person | -4.6% |
| 2021 | 0.0147 one-year-olds per person | -16.1% |
| 2022 | 0.013 one-year-olds per person | -11.4% |
| 2023 | 0.0125 one-year-olds per person | -3.9% |
Chad compared with similar countries
- Chad's 0.0125 one-year-olds per person is above the median for low income countries, which is 0.0072 one-year-olds per person, 1.8× the median. (25 countries reporting)
- Chad's 0.0125 one-year-olds per person is above the median for Sub-Saharan Africa, which is 0.0048 one-year-olds per person, 2.6× the median. (48 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 0.0362 one-year-olds per person | 0.0332 one-year-olds per person | 0.0403 one-year-olds per person | 7 |
| 1990s | 0.0335 one-year-olds per person | 0.0238 one-year-olds per person | 0.0382 one-year-olds per person | 10 |
| 2000s | 0.0309 one-year-olds per person | 0.0251 one-year-olds per person | 0.0345 one-year-olds per person | 10 |
| 2010s | 0.0241 one-year-olds per person | 0.0184 one-year-olds per person | 0.0281 one-year-olds per person | 10 |
| 2020s | 0.0145 one-year-olds per person | 0.0125 one-year-olds per person | 0.0176 one-year-olds per person | 4 |
Countries ranked near Chad
- 4 Sudan 0.0152 one-year-olds per person compare
- 5 Congo, Democratic Republic of the 0.015 one-year-olds per person compare
- 6 Afghanistan 0.0131 one-year-olds per person compare
- 8 Guinea 0.0124 one-year-olds per person compare
- 9 Somalia 0.0118 one-year-olds per person compare
- 10 Angola 0.0118 one-year-olds per person compare
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 are not vaccinated against diphtheria in Chad?
- Number of one-year-olds who are not vaccinated against diphtheria in Chad was 0.0125 one-year-olds per person in 2023, according to Statizoid (derived).
- What is the highest number of one-year-olds who are not vaccinated against diphtheria recorded in Chad?
- The highest recorded value was 0.0403 one-year-olds per person in 1985.
- What is the lowest number of one-year-olds who are not vaccinated against diphtheria recorded in Chad?
- The lowest recorded value was 0.0125 one-year-olds per person in 2023.
- How does Chad rank for number of one-year-olds who are not vaccinated against diphtheria?
- Chad ranks 7th out of 192 countries with data for 2023.
- Is number of one-year-olds who are not vaccinated against diphtheria rising or falling in Chad?
- Over the last ten years it is down 50.5%. The long-run trend across the full record is falling.
- Where does this Chad data come from?
- The figures come from Statizoid (derived), published as part of Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus, per capita. Statizoid updates them automatically from the source API.
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CSV · JSON — 41 observations, free to reuse under Derived by Statizoid from the sources named on the page.
How this figure is calculated
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus divided by Population, total, matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus ÷ Population, total
Computed from
- Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data
- Population, total World Population Prospects, United Nations (UN)
Statizoid computes this series; the underlying measurements belong to the publishers named above. The arithmetic is applied to every country and year where both inputs report, and nothing is estimated unless the page says so.
About this data
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus divided by Population, total, matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.