How many years of comparable data are there for Grenada and Samoa?

37 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.

Grenada vs Samoa: Diphtheria - number of reported cases, per square kilometre

Grenada

0 units per square kilometre

in 2023

Samoa

0 units per square kilometre

in 2023

Grenada rank

57th

Samoa rank

57th

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

Grenada
Samoa

How they compare

Grenada currently reports 0 units per square kilometre against 0 units per square kilometre in Samoa, a difference of 0 units per square kilometre.

The two have swapped places 6 times across 37 shared years of data; in 1974 it was Samoa ahead.

Grenada ranks 57th and Samoa ranks 57th of 204 countries.

Across the 6 decades both report, Grenada averaged higher in 2 and Samoa in 1.

Head to head by decade

Decade	Grenada	Samoa	Difference	Ahead
1970s	0.001 units per square kilometre	0 units per square kilometre	0.001 units per square kilometre	Grenada
1980s	0.0006 units per square kilometre	0.0002 units per square kilometre	0.0004 units per square kilometre	Grenada
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	0.0001 units per square kilometre	0.0001 units per square kilometre	Samoa
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, Grenada or Samoa?: Grenada, at 0 units per square kilometre against 0 units per square kilometre in Samoa as of 2023.
What is the difference in diphtheria - number of reported cases, per square kilometre between Grenada and Samoa?: 0 units per square kilometre, with Grenada ahead.
How many years of comparable data are there for Grenada and Samoa?: 37 years are reported by both, from 1974 to 2023.
How do Grenada and Samoa rank globally for diphtheria - number of reported cases, per square kilometre?: Grenada ranks 57th and Samoa 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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Grenada vs Samoa: 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/grenada/samoa/

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<a href="https://health.statizoid.com/compare/diphtheria-number-of-reported-cases-per-square-kilometre/grenada/samoa/">Grenada vs Samoa: 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.