Chad vs Spain: Pertussis - number of reported cases, per square kilometre

Chad
0.0047 units per square kilometre
in 1998
Spain
0.0051 units per square kilometre
in 2023
Chad rank
29th
Spain rank
28th

Pertussis - number of reported cases, per square kilometre over time

  • Chad
  • Spain
00.0250.050.0750.10.125197419982023

How they compare

Spain currently reports 0.0051 units per square kilometre against 0.0047 units per square kilometre in Chad, a difference of 0.0004 units per square kilometre.

That makes Spain's figure about 1.1 times Chad's.

The two have swapped places 1 time across 9 shared years of data; in 1982 it was Spain ahead.

Chad ranks 29th and Spain ranks 28th of 204 countries.

Across the 2 decades both report, Chad averaged higher in 1 and Spain in 1.

Head to head by decade

Decade Chad Spain Difference Ahead
1980s 0.0014 units per square kilometre 0.0957 units per square kilometre 0.0943 units per square kilometre Spain
1990s 0.0044 units per square kilometre 0.0044 units per square kilometre 0 units per square kilometre Chad

Averages of every year both report within each decade.

Frequently asked questions

Which has higher pertussis - number of reported cases, per square kilometre, Chad or Spain?
Spain, at 0.0051 units per square kilometre against 0.0047 units per square kilometre in Chad as of 2023.
What is the difference in pertussis - number of reported cases, per square kilometre between Chad and Spain?
0.0004 units per square kilometre, with Spain ahead.
How many years of comparable data are there for Chad and Spain?
9 years are reported by both, from 1982 to 1998.
How do Chad and Spain rank globally for pertussis - number of reported cases, per square kilometre?
Chad ranks 29th and Spain ranks 28th of 204 countries.
Where does this data come from?
Statizoid (derived), published as Pertussis - number of reported cases, per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Chad vs Spain: Pertussis - number of reported cases, per square kilometre. Statizoid, drawing on Statizoid (derived). Retrieved 11 September 2026, from https://health.statizoid.com/compare/pertussis-number-of-reported-cases-per-square-kilometre/chad/spain/

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About this data

Indicator
Pertussis - number of reported cases, per square kilometre
Unit
units per square kilometre
Source
Statizoid (derived)
Licence
Derived by Statizoid from the sources named on the page
Coverage
205 places, 7,899 data points, 1974–2023
Last refreshed

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.