Diphtheria - number of reported cases, gaps filled in Chad
Chad: Diphtheria - number of reported cases, gaps filled was 4 in 2025. ◆ Volatile
Diphtheria - number of reported cases, gaps filled in Chad, 1974–2025
Source: Statizoid (derived).
Analysis
In 2025, diphtheria - number of reported cases, gaps filled in Chad stood at 4.
That represents a change of down 99.8% on the previous year.
Over the whole period, diphtheria - number of reported cases, gaps filled in Chad peaked at 2,599 in 2024 and was at its lowest, 0, in 1978.
That places Chad 41st out of 210 countries with data for 2025, putting it in the top quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Diphtheria - number of reported cases, gaps filled in Chad, year by year
| Year | Value | Change |
|---|---|---|
| 1974 | 5 | — |
| 1975 | 3 | -40.0% |
| 1976 | 1 | -66.7% |
| 1977 | 5 | +400.0% |
| 1978 | 0 | -100.0% |
| 1979 | 0 | — |
| 1980 | 0 | — |
| 1981 | 0 | — |
| 1982 | 0 | — |
| 1983 | 1 | — |
| 1984 | 4 | +300.0% |
| 1985 | 10 | +150.0% |
| 1986 | 4 | -60.0% |
| 1997 | 0 | -100.0% |
| 2023 | 671 | — |
| 2024 | 2,599 | +287.3% |
| 2025 | 4 | -99.8% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 2.33 | 0 | 5 | 6 |
| 1980s | 2.71 | 0 | 10 | 7 |
| 1990s | 0 | 0 | 0 | 1 |
| 2020s | 1,091 | 4 | 2,599 | 3 |
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)
- Total tetanus - number of reported cases, gaps filled 573 (2025)
- Total tetanus - number of reported cases, per capita 0 units per person (2025)
- Diphtheria - number of reported cases, per capita 0 units per person (2025)
- Measles - number of reported cases, gaps filled 495 (2025)
- Measles - number of reported cases, per unit of GDP 0 units per US$ of GDP (2025)
- Measles - number of reported cases, per capita 0 units per person (2025)
Frequently asked questions
- What is diphtheria - number of reported cases, gaps filled in Chad?
- Diphtheria - number of reported cases, gaps filled in Chad was 4 in 2025, according to Statizoid (derived).
- What is the highest diphtheria - number of reported cases, gaps filled recorded in Chad?
- The highest recorded value was 2,599 in 2024.
- What is the lowest diphtheria - number of reported cases, gaps filled recorded in Chad?
- The lowest recorded value was 0 in 1978.
- How does Chad rank for diphtheria - number of reported cases, gaps filled?
- Chad ranks 41st out of 210 countries with data for 2025.
- Where does this Chad data come from?
- The figures come from Statizoid (derived), published as part of Diphtheria - number of reported cases, gaps filled. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 17 observations, free to reuse under Derived by Statizoid from the sources named on the page.
How this figure is calculated
Diphtheria - number of reported cases with 613 missing years estimated by linear interpolation between the nearest real observations. Only gaps of 4 years or fewer are filled, and never beyond the first or last actual measurement — these are filled holes, not forecasts.
Computed from
- Diphtheria - number of reported cases World Health Organization, Global Health Observatory
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
Diphtheria - number of reported cases with 613 missing years estimated by linear interpolation between the nearest real observations. Only gaps of 4 years or fewer are filled, and never beyond the first or last actual measurement — these are filled holes, not forecasts.