What is the difference in pertussis - number of reported cases, gaps filled between Africa (WHO region) and Chad?

6,304, with Africa (WHO region) ahead.

How many years of comparable data are there for Africa (WHO region) and Chad?

11 years are reported by both, from 1980 to 1998.

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.

Africa (WHO region) vs Chad: Pertussis - number of reported cases, gaps filled

Africa (WHO region)

12,202

in 2025

Chad

5,898

in 1998

Africa (WHO region) rank

9th

Chad rank

9th

Pertussis - number of reported cases, gaps filled over time

Africa (WHO region)
Chad

How they compare

Africa (WHO region) currently reports 12,202 against 5,898 in Chad, a difference of 6,304.

That makes Africa (WHO region)'s figure about 2.1 times Chad's.

Across all 11 years both countries report, Africa (WHO region) has been ahead every year.

Africa (WHO region) ranks 9th and Chad ranks 9th of 11 groups.

Africa (WHO region) has averaged higher in every one of the 2 decades both report.

Head to head by decade

Decade	Africa (WHO region)	Chad	Difference	Ahead
1980s	298,991	1,573	297,418	Africa (WHO region)
1990s	25,680	5,536	20,143	Africa (WHO region)

Averages of every year both report within each decade.

Frequently asked questions

Which has higher pertussis - number of reported cases, gaps filled, Africa (WHO region) or Chad?: Africa (WHO region), at 12,202 against 5,898 in Chad as of 2025.
What is the difference in pertussis - number of reported cases, gaps filled between Africa (WHO region) and Chad?: 6,304, with Africa (WHO region) ahead.
How many years of comparable data are there for Africa (WHO region) and Chad?: 11 years are reported by both, from 1980 to 1998.
How do Africa (WHO region) and Chad rank globally for pertussis - number of reported cases, gaps filled?: Africa (WHO region) ranks 9th and Chad ranks 9th of 11 groups.
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.

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Africa (WHO region) vs Chad: Pertussis - number of reported cases, gaps filled. Statizoid, drawing on Statizoid (derived). Retrieved 12 September 2026, from https://health.statizoid.com/compare/pertussis-number-of-reported-cases-gaps-filled/africa-who-region/chad/

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<a href="https://health.statizoid.com/compare/pertussis-number-of-reported-cases-gaps-filled/africa-who-region/chad/">Africa (WHO region) vs Chad: Pertussis - number of reported cases, gaps filled</a> — Statizoid

About this data

Indicator: Pertussis - number of reported cases, gaps filled
Source: Statizoid (derived)
Licence: Derived by Statizoid from the sources named on the page
Coverage: 223 places, 9,846 data points, 1974–2025
Last refreshed: 01 September 2026

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.