How many years of comparable data are there for Guinea-Bissau and Zambia?

34 years are reported by both, from 1974 to 2018.

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.

Guinea-Bissau vs Zambia: Pertussis - number of reported cases, per square kilometre

Guinea-Bissau

0 units per square kilometre

in 2023

Zambia

0 units per square kilometre

in 2018

Guinea-Bissau rank

132nd

Zambia rank

132nd

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

Guinea-Bissau
Zambia

How they compare

Guinea-Bissau currently reports 0 units per square kilometre against 0 units per square kilometre in Zambia, a difference of 0 units per square kilometre.

The two have swapped places 8 times across 34 shared years of data; in 1974 it was Zambia ahead.

Guinea-Bissau ranks 132nd and Zambia ranks 132nd of 204 countries.

Across the 5 decades both report, Guinea-Bissau averaged higher in 2 and Zambia in 2.

Head to head by decade

Decade	Guinea-Bissau	Zambia	Difference	Ahead
1970s	0.0225 units per square kilometre	0.0414 units per square kilometre	0.0189 units per square kilometre	Zambia
1980s	0.0389 units per square kilometre	0.012 units per square kilometre	0.0269 units per square kilometre	Guinea-Bissau
1990s	0.0184 units per square kilometre	0.0006 units per square kilometre	0.0179 units per square kilometre	Guinea-Bissau
2000s	0.0003 units per square kilometre	0.0005 units per square kilometre	0.0002 units per square kilometre	Zambia
2010s	0 units per square kilometre	0 units per square kilometre	0 units per square kilometre	—

Averages of every year both report within each decade.

Frequently asked questions

Which has higher pertussis - number of reported cases, per square kilometre, Guinea-Bissau or Zambia?: Guinea-Bissau, at 0 units per square kilometre against 0 units per square kilometre in Zambia as of 2023.
What is the difference in pertussis - number of reported cases, per square kilometre between Guinea-Bissau and Zambia?: 0 units per square kilometre, with Guinea-Bissau ahead.
How many years of comparable data are there for Guinea-Bissau and Zambia?: 34 years are reported by both, from 1974 to 2018.
How do Guinea-Bissau and Zambia rank globally for pertussis - number of reported cases, per square kilometre?: Guinea-Bissau ranks 132nd and Zambia ranks 132nd 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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Guinea-Bissau vs Zambia: 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/guinea-bissau/zambia/

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<a href="https://health.statizoid.com/compare/pertussis-number-of-reported-cases-per-square-kilometre/guinea-bissau/zambia/">Guinea-Bissau vs Zambia: Pertussis - number of reported cases, per square kilometre</a> — Statizoid

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: 01 September 2026

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.