How many years of comparable data are there for Congo and Denmark?

38 years are reported by both, from 1974 to 2023.

Where does this data come from?

Statizoid (derived), published as Diphtheria - number of reported cases, per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Congo vs Denmark: Diphtheria - number of reported cases, per square kilometre

Congo

0 units per square kilometre

in 2023

Denmark

0 units per square kilometre

in 2023

Congo rank

57th

Denmark rank

57th

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

Congo
Denmark

How they compare

Congo currently reports 0 units per square kilometre against 0 units per square kilometre in Denmark, a difference of 0 units per square kilometre.

The two have swapped places 7 times across 38 shared years of data; in 1974 it was Congo ahead.

Congo ranks 57th and Denmark ranks 57th of 204 countries.

Across the 6 decades both report, Congo averaged higher in 2 and Denmark in 2.

Head to head by decade

Decade	Congo	Denmark	Difference	Ahead
1970s	0 units per square kilometre	0 units per square kilometre	0 units per square kilometre	Congo
1980s	0 units per square kilometre	0 units per square kilometre	0 units per square kilometre	Denmark
1990s	0 units per square kilometre	0 units per square kilometre	0 units per square kilometre	—
2000s	0 units per square kilometre	0 units per square kilometre	0 units per square kilometre	—
2010s	0 units per square kilometre	0 units per square kilometre	0 units per square kilometre	Denmark
2020s	0 units per square kilometre	0 units per square kilometre	0 units per square kilometre	Congo

Averages of every year both report within each decade.

Frequently asked questions

Which has higher diphtheria - number of reported cases, per square kilometre, Congo or Denmark?: Congo, at 0 units per square kilometre against 0 units per square kilometre in Denmark as of 2023.
What is the difference in diphtheria - number of reported cases, per square kilometre between Congo and Denmark?: 0 units per square kilometre, with Congo ahead.
How many years of comparable data are there for Congo and Denmark?: 38 years are reported by both, from 1974 to 2023.
How do Congo and Denmark rank globally for diphtheria - number of reported cases, per square kilometre?: Congo ranks 57th and Denmark ranks 57th of 204 countries.
Where does this data come from?: Statizoid (derived), published as Diphtheria - 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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Congo vs Denmark: Diphtheria - number of reported cases, per square kilometre. Statizoid, drawing on Statizoid (derived). Retrieved 31 August 2026, from https://health.statizoid.com/compare/diphtheria-number-of-reported-cases-per-square-kilometre/congo-rep/denmark/

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<a href="https://health.statizoid.com/compare/diphtheria-number-of-reported-cases-per-square-kilometre/congo-rep/denmark/">Congo vs Denmark: Diphtheria - number of reported cases, per square kilometre</a> — Statizoid

About this data

Indicator: Diphtheria - 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, 7,917 data points, 1974–2023
Last refreshed: 31 August 2026

Diphtheria - 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.