Chad vs Lower-middle income (World Bank): Pertussis - number of reported cases, gaps filled
Pertussis - number of reported cases, gaps filled over time
- Chad
- Lower-middle income (World Bank)
How they compare
Lower-middle income (World Bank) currently reports 7,080 against 5,898 in Chad, a difference of 1,182.
That makes Lower-middle income (World Bank)'s figure about 1.2 times Chad's.
Across all 17 years both countries report, Lower-middle income (World Bank) has been ahead every year.
Chad ranks 9th and Lower-middle income (World Bank) ranks 10th of 210 countries.
Lower-middle income (World Bank) has averaged higher in every one of the 3 decades both report.
Head to head by decade
| Decade | Chad | Lower-middle income (World Bank) | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 5,992 | 569,114 | 563,122 | Lower-middle income (World Bank) |
| 1980s | 1,573 | 604,169 | 602,597 | Lower-middle income (World Bank) |
| 1990s | 5,536 | 47,950 | 42,414 | Lower-middle income (World Bank) |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher pertussis - number of reported cases, gaps filled, Chad or Lower-middle income (World Bank)?
- Lower-middle income (World Bank), at 7,080 against 5,898 in Chad as of 2025.
- What is the difference in pertussis - number of reported cases, gaps filled between Chad and Lower-middle income (World Bank)?
- 1,182, with Lower-middle income (World Bank) ahead.
- How many years of comparable data are there for Chad and Lower-middle income (World Bank)?
- 17 years are reported by both, from 1974 to 1998.
- How do Chad and Lower-middle income (World Bank) rank globally for pertussis - number of reported cases, gaps filled?
- Chad ranks 9th and Lower-middle income (World Bank) ranks 10th of 210 countries.
- Where does this data come from?
- Statizoid (derived), published as Pertussis - number of reported cases, gaps filled. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
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.