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 one-year-olds per US$ of GDP in 2023. ◆ Volatile
Number of one-year-olds who are not vaccinated against diphtheria in Chad, 1983–2023
Source: Statizoid (derived). Measured in one-year-olds per US$ of GDP.
Analysis
In 2023, number of one-year-olds who are not vaccinated against diphtheria in Chad stood at 0 one-year-olds per US$ of GDP. That is the lowest value across all 41 years on record.
The figure is down 2.2% on the previous year and down 32.0% over ten years.
Over the whole period, number of one-year-olds who are not vaccinated against diphtheria in Chad peaked at 0.0002 one-year-olds per US$ of GDP in 1983 and was at its lowest, 0 one-year-olds per US$ of GDP, in 2023.
That places Chad 11th out of 191 countries with data for 2023, putting it in the top 10%.
The series is highly variable year to year, so single readings are best treated with caution.
Number of one-year-olds who are not vaccinated against diphtheria in Chad, year by year
| Year | one-year-olds per US$ of GDP | Change |
|---|---|---|
| 1983 | 0.0002 one-year-olds per US$ of GDP | — |
| 1984 | 0.0002 one-year-olds per US$ of GDP | -4.5% |
| 1985 | 0.0002 one-year-olds per US$ of GDP | -4.5% |
| 1986 | 0.0002 one-year-olds per US$ of GDP | -9.2% |
| 1987 | 0.0002 one-year-olds per US$ of GDP | -11.4% |
| 1988 | 0.0001 one-year-olds per US$ of GDP | -17.6% |
| 1989 | 0.0001 one-year-olds per US$ of GDP | +2.0% |
| 1990 | 0.0001 one-year-olds per US$ of GDP | -13.3% |
| 1991 | 0.0001 one-year-olds per US$ of GDP | -0.7% |
| 1992 | 0.0001 one-year-olds per US$ of GDP | +13.3% |
| 1993 | 0.0002 one-year-olds per US$ of GDP | +29.9% |
| 1994 | 0.0002 one-year-olds per US$ of GDP | +23.2% |
| 1995 | 0.0002 one-year-olds per US$ of GDP | -16.7% |
| 1996 | 0.0002 one-year-olds per US$ of GDP | -10.7% |
| 1997 | 0.0002 one-year-olds per US$ of GDP | +4.0% |
| 1998 | 0.0001 one-year-olds per US$ of GDP | -23.2% |
| 1999 | 0.0001 one-year-olds per US$ of GDP | +2.3% |
| 2000 | 0.0002 one-year-olds per US$ of GDP | +28.6% |
| 2001 | 0.0002 one-year-olds per US$ of GDP | -0.1% |
| 2002 | 0.0001 one-year-olds per US$ of GDP | -10.4% |
| 2003 | 0.0001 one-year-olds per US$ of GDP | -23.1% |
| 2004 | 0.0001 one-year-olds per US$ of GDP | -35.2% |
| 2005 | 0 one-year-olds per US$ of GDP | -49.3% |
| 2006 | 0 one-year-olds per US$ of GDP | -25.4% |
| 2007 | 0 one-year-olds per US$ of GDP | +11.7% |
| 2008 | 0 one-year-olds per US$ of GDP | -4.4% |
| 2009 | 0 one-year-olds per US$ of GDP | +2.3% |
| 2010 | 0 one-year-olds per US$ of GDP | -26.8% |
| 2011 | 0 one-year-olds per US$ of GDP | -2.8% |
| 2012 | 0 one-year-olds per US$ of GDP | -13.9% |
| 2013 | 0 one-year-olds per US$ of GDP | +4.9% |
| 2014 | 0 one-year-olds per US$ of GDP | +6.2% |
| 2015 | 0 one-year-olds per US$ of GDP | +15.9% |
| 2016 | 0 one-year-olds per US$ of GDP | +16.6% |
| 2017 | 0 one-year-olds per US$ of GDP | -0.6% |
| 2018 | 0 one-year-olds per US$ of GDP | -20.3% |
| 2019 | 0 one-year-olds per US$ of GDP | -6.7% |
| 2020 | 0 one-year-olds per US$ of GDP | -1.7% |
| 2021 | 0 one-year-olds per US$ of GDP | -23.1% |
| 2022 | 0 one-year-olds per US$ of GDP | -13.2% |
| 2023 | 0 one-year-olds per US$ of GDP | -2.2% |
Chad compared with similar countries
- Chad's 0 one-year-olds per US$ of GDP is above the median for low income countries, which is 0 one-year-olds per US$ of GDP, 1.5× the median. (24 countries reporting)
- Chad's 0 one-year-olds per US$ of GDP is above the median for Sub-Saharan Africa, which is 0 one-year-olds per US$ of GDP, 4.2× the median. (48 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 0.0002 one-year-olds per US$ of GDP | 0.0001 one-year-olds per US$ of GDP | 0.0002 one-year-olds per US$ of GDP | 7 |
| 1990s | 0.0001 one-year-olds per US$ of GDP | 0.0001 one-year-olds per US$ of GDP | 0.0002 one-year-olds per US$ of GDP | 10 |
| 2000s | 0.0001 one-year-olds per US$ of GDP | 0 one-year-olds per US$ of GDP | 0.0002 one-year-olds per US$ of GDP | 10 |
| 2010s | 0 one-year-olds per US$ of GDP | 0 one-year-olds per US$ of GDP | 0 one-year-olds per US$ of GDP | 10 |
| 2020s | 0 one-year-olds per US$ of GDP | 0 one-year-olds per US$ of GDP | 0 one-year-olds per US$ of GDP | 4 |
Countries ranked near Chad
- 8 Mozambique 0 one-year-olds per US$ of GDP compare
- 9 South Sudan 0 one-year-olds per US$ of GDP compare
- 10 Burundi 0 one-year-olds per US$ of GDP compare
- 12 Mali 0 one-year-olds per US$ of GDP compare
- 13 Ethiopia 0 one-year-olds per US$ of GDP compare
- 14 Niger 0 one-year-olds per US$ of GDP 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 one-year-olds per US$ of GDP 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 0.0002 one-year-olds per US$ of GDP in 1983.
- What is the lowest number of one-year-olds who are not vaccinated against diphtheria recorded in Chad?
- The lowest recorded value was 0 one-year-olds per US$ of GDP in 2023.
- How does Chad rank for number of one-year-olds who are not vaccinated against diphtheria?
- Chad ranks 11th out of 191 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 32.0%. The long-run trend across the full record is volatile.
- 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 unit of GDP. Statizoid updates them automatically from the source API.
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How this figure is calculated
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus divided by GDP (current US$), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus ÷ GDP (current US$)
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
- GDP Country official statistics, National Statistical Organizations and/or Central Banks
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 GDP (current US$), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.