Pertussis - number of reported cases, per square kilometre in Chad
Chad: Pertussis - number of reported cases, per square kilometre was 0.0047 units per square kilometre in 1998. ◆ Volatile
Pertussis - number of reported cases, per square kilometre in Chad, 1974–1998
Source: Statizoid (derived). Measured in units per square kilometre.
Analysis
Chad recorded 0.0047 units per square kilometre for pertussis - number of reported cases, per square kilometre in 1998.
Compared with earlier readings it is up 7.3% on the previous year and up 156.1% over ten years.
Over the whole period, pertussis - number of reported cases, per square kilometre in Chad peaked at 0.0095 units per square kilometre in 1976 and was at its lowest, 0.0002 units per square kilometre, in 1982.
Chad ranks 29th of 204 countries on this measure, in the top quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Pertussis - number of reported cases, per square kilometre in Chad, year by year
| Year | units per square kilometre | Change |
|---|---|---|
| 1974 | 0.0044 units per square kilometre | — |
| 1975 | 0.0066 units per square kilometre | +51.4% |
| 1976 | 0.0095 units per square kilometre | +44.2% |
| 1977 | 0.0047 units per square kilometre | -50.6% |
| 1978 | 0.0019 units per square kilometre | -60.1% |
| 1982 | 0.0002 units per square kilometre | -88.5% |
| 1983 | 0.0018 units per square kilometre | +738.1% |
| 1984 | 0.002 units per square kilometre | +10.7% |
| 1985 | 0.0012 units per square kilometre | -40.9% |
| 1986 | 0.0018 units per square kilometre | +53.9% |
| 1995 | 0.0046 units per square kilometre | +149.5% |
| 1996 | 0.004 units per square kilometre | -12.9% |
| 1997 | 0.0044 units per square kilometre | +9.9% |
| 1998 | 0.0047 units per square kilometre | +7.3% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 0.0054 units per square kilometre | 0.0019 units per square kilometre | 0.0095 units per square kilometre | 5 |
| 1980s | 0.0014 units per square kilometre | 0.0002 units per square kilometre | 0.002 units per square kilometre | 5 |
| 1990s | 0.0044 units per square kilometre | 0.004 units per square kilometre | 0.0047 units per square kilometre | 4 |
Countries ranked near Chad
- 26 Slovenia 0.0063 units per square kilometre compare
- 27 Aruba 0.0056 units per square kilometre
- 28 Spain 0.0051 units per square kilometre compare
- 30 Slovakia 0.0046 units per square kilometre compare
- 31 China 0.0044 units per square kilometre compare
- 32 Belarus 0.0043 units per square kilometre 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 pertussis - number of reported cases, per square kilometre in Chad?
- Pertussis - number of reported cases, per square kilometre in Chad was 0.0047 units per square kilometre in 1998, according to Statizoid (derived).
- What is the highest pertussis - number of reported cases, per square kilometre recorded in Chad?
- The highest recorded value was 0.0095 units per square kilometre in 1976.
- What is the lowest pertussis - number of reported cases, per square kilometre recorded in Chad?
- The lowest recorded value was 0.0002 units per square kilometre in 1982.
- How does Chad rank for pertussis - number of reported cases, per square kilometre?
- Chad ranks 29th out of 204 countries with data for 1998.
- Is pertussis - number of reported cases, per square kilometre 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, per square kilometre. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 14 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 divided by Land area (sq. km), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.
Pertussis - number of reported cases ÷ Land area (sq. km)
Computed from
- Pertussis - number of reported cases World Health Organization, Global Health Observatory
- Land area FAOSTAT, Food and Agriculture Organization of the United Nations (FAO)
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 divided by Land area (sq. km), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.