What is the difference in diphtheria - number of reported cases, per square kilometre between Iran, Islamic Republic of and Japan?

0 units per square kilometre, with Iran, Islamic Republic of ahead.

How many years of comparable data are there for Iran, Islamic Republic of and Japan?

41 years are reported by both, from 1974 to 2021.

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.

Iran, Islamic Republic of vs Japan: Diphtheria - number of reported cases, per square kilometre

Iran, Islamic Republic of

0 units per square kilometre

in 2023

Japan

0 units per square kilometre

in 2021

Iran, Islamic Republic of rank

57th

Japan rank

57th

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

Iran, Islamic Republic of
Japan

How they compare

Iran, Islamic Republic of currently reports 0 units per square kilometre against 0 units per square kilometre in Japan, a difference of 0 units per square kilometre.

The two have swapped places 5 times across 41 shared years of data; in 1974 it was Iran, Islamic Republic of ahead.

Iran, Islamic Republic of ranks 57th and Japan ranks 57th of 204 countries.

Iran, Islamic Republic of has averaged higher in every one of the 6 decades both report.

Head to head by decade

Decade	Iran, Islamic Republic of	Japan	Difference	Ahead
1970s	0.0006 units per square kilometre	0.0004 units per square kilometre	0.0003 units per square kilometre	Iran, Islamic Republic of
1980s	0.0001 units per square kilometre	0.0001 units per square kilometre	0.0001 units per square kilometre	Iran, Islamic Republic of
1990s	0.0001 units per square kilometre	0 units per square kilometre	0.0001 units per square kilometre	Iran, Islamic Republic of
2000s	0 units per square kilometre	0 units per square kilometre	0 units per square kilometre	Iran, Islamic Republic of
2010s	0 units per square kilometre	0 units per square kilometre	0 units per square kilometre	Iran, Islamic Republic of
2020s	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 diphtheria - number of reported cases, per square kilometre, Iran, Islamic Republic of or Japan?: Iran, Islamic Republic of, at 0 units per square kilometre against 0 units per square kilometre in Japan as of 2023.
What is the difference in diphtheria - number of reported cases, per square kilometre between Iran, Islamic Republic of and Japan?: 0 units per square kilometre, with Iran, Islamic Republic of ahead.
How many years of comparable data are there for Iran, Islamic Republic of and Japan?: 41 years are reported by both, from 1974 to 2021.
How do Iran, Islamic Republic of and Japan rank globally for diphtheria - number of reported cases, per square kilometre?: Iran, Islamic Republic of ranks 57th and Japan 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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Iran, Islamic Republic of vs Japan: Diphtheria - number of reported cases, per square kilometre. Statizoid, drawing on Statizoid (derived). Retrieved 07 September 2026, from https://health.statizoid.com/compare/diphtheria-number-of-reported-cases-per-square-kilometre/iran-islamic-rep/japan/

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<a href="https://health.statizoid.com/compare/diphtheria-number-of-reported-cases-per-square-kilometre/iran-islamic-rep/japan/">Iran, Islamic Republic of vs Japan: 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.