Pertussis - number of reported cases, gaps filled in Chad
Chad: Pertussis - number of reported cases, gaps filled was 5,898 in 1998. ◆ Volatile
Pertussis - number of reported cases, gaps filled in Chad, 1974–1998
Source: Statizoid (derived).
Analysis
In 1998, pertussis - number of reported cases, gaps filled in Chad stood at 5,898.
The figure is up 7.3% on the previous year and up 156.1% over ten years.
Over the whole period, pertussis - number of reported cases, gaps filled in Chad peaked at 11,999 in 1976 and was at its lowest, 273, in 1982.
Chad ranks 9th of 210 countries on this measure, in the top 10%.
The series is highly variable year to year, so single readings are best treated with caution.
Pertussis - number of reported cases, gaps filled in Chad, year by year
| Year | Value | Change |
|---|---|---|
| 1974 | 5,498 | — |
| 1975 | 8,319 | +51.3% |
| 1976 | 11,999 | +44.2% |
| 1977 | 5,930 | -50.6% |
| 1978 | 2,366 | -60.1% |
| 1979 | 1,843 | -22.1% |
| 1980 | 1,320 | -28.4% |
| 1981 | 796.25 | -39.7% |
| 1982 | 273 | -65.7% |
| 1983 | 2,288 | +738.1% |
| 1984 | 2,532 | +10.7% |
| 1985 | 1,496 | -40.9% |
| 1986 | 2,303 | +53.9% |
| 1995 | 5,745 | +149.5% |
| 1996 | 5,004 | -12.9% |
| 1997 | 5,498 | +9.9% |
| 1998 | 5,898 | +7.3% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 5,992 | 1,843 | 11,999 | 6 |
| 1980s | 1,573 | 273 | 2,532 | 7 |
| 1990s | 5,536 | 5,004 | 5,898 | 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)
- Population ages 80 and above, female, per capita 0.0013 units per person (2025)
- Population ages 80 and above, male, annual growth rate -0.4188 % change on previous year (2025)
- Population ages 80 and above, male, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 80 and above, male, per capita 0.0009 units per person (2025)
- Pertussis - number of reported cases, per capita 0.0007 units per person (1998)
- Total tetanus - number of reported cases, gaps filled 573 (2025)
Frequently asked questions
- What is pertussis - number of reported cases, gaps filled in Chad?
- Pertussis - number of reported cases, gaps filled in Chad was 5,898 in 1998, according to Statizoid (derived).
- What is the highest pertussis - number of reported cases, gaps filled recorded in Chad?
- The highest recorded value was 11,999 in 1976.
- What is the lowest pertussis - number of reported cases, gaps filled recorded in Chad?
- The lowest recorded value was 273 in 1982.
- How does Chad rank for pertussis - number of reported cases, gaps filled?
- Chad ranks 9th out of 210 countries with data for 1998.
- Is pertussis - number of reported cases, gaps filled rising or falling in Chad?
- Over the last ten years it is up 156.1%. 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 Pertussis - 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
Pertussis - number of reported cases with 623 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
- Pertussis - 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
Pertussis - number of reported cases with 623 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.