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

18,742, with Americas (WHO region) ahead.

How many years of comparable data are there for Americas (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.

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

Americas (WHO region)

24,640

in 2025

Chad

5,898

in 1998

Americas (WHO region) rank

6th

Chad rank

9th

Pertussis - number of reported cases, gaps filled over time

Americas (WHO region)
Chad

How they compare

Americas (WHO region) currently reports 24,640 against 5,898 in Chad, a difference of 18,742.

That makes Americas (WHO region)'s figure about 4.2 times Chad's.

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

Americas (WHO region) ranks 6th and Chad ranks 9th of 11 groups.

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

Head to head by decade

Decade	Americas (WHO region)	Chad	Difference	Ahead
1980s	80,421	1,573	78,848	Americas (WHO region)
1990s	21,397	5,536	15,861	Americas (WHO region)

Averages of every year both report within each decade.

Frequently asked questions

Which has higher pertussis - number of reported cases, gaps filled, Americas (WHO region) or Chad?: Americas (WHO region), at 24,640 against 5,898 in Chad as of 2025.
What is the difference in pertussis - number of reported cases, gaps filled between Americas (WHO region) and Chad?: 18,742, with Americas (WHO region) ahead.
How many years of comparable data are there for Americas (WHO region) and Chad?: 11 years are reported by both, from 1980 to 1998.
How do Americas (WHO region) and Chad rank globally for pertussis - number of reported cases, gaps filled?: Americas (WHO region) ranks 6th 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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Americas (WHO region) vs Chad: Pertussis - number of reported cases, gaps filled. Statizoid, drawing on Statizoid (derived). Retrieved 10 September 2026, from https://health.statizoid.com/compare/pertussis-number-of-reported-cases-gaps-filled/americas-who-region/chad/

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<a href="https://health.statizoid.com/compare/pertussis-number-of-reported-cases-gaps-filled/americas-who-region/chad/">Americas (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.