What is the difference in share of one-year-olds vaccinated against measles between Iran, Islamic Republic of and Tonga?

0.0%, with Iran, Islamic Republic of ahead.

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

44 years are reported by both, from 1981 to 2024.

Iran, Islamic Republic of vs Tonga: Share of one-year-olds vaccinated against measles

Iran, Islamic Republic of

99.0%

in 2024

Tonga

99.0%

in 2024

Iran, Islamic Republic of rank

1st

Tonga rank

1st

Share of one-year-olds vaccinated against measles over time

Iran, Islamic Republic of
Tonga

How they compare

Iran, Islamic Republic of currently reports 99.0% against 99.0% in Tonga, a difference of 0.0%.

The two have swapped places 13 times across 44 shared years of data; in 1981 it was Iran, Islamic Republic of ahead.

Iran, Islamic Republic of ranks 1st and Tonga ranks 1st of 194 countries.

Across the 5 decades both report, Iran, Islamic Republic of averaged higher in 3 and Tonga in 1.

Head to head by decade

Decade	Iran, Islamic Republic of	Tonga	Difference	Ahead
1980s	57.0%	59.3%	2.3%	Tonga
1990s	94.5%	91.5%	3.0%	Iran, Islamic Republic of
2000s	97.6%	97.1%	0.5%	Iran, Islamic Republic of
2010s	98.8%	98.5%	0.3%	Iran, Islamic Republic of
2020s	99.0%	99.0%	0.0%	—

Averages of every year both report within each decade.

Frequently asked questions

Which has higher share of one-year-olds vaccinated against measles, Iran, Islamic Republic of or Tonga?: Iran, Islamic Republic of, at 99.0% against 99.0% in Tonga as of 2024.
What is the difference in share of one-year-olds vaccinated against measles between Iran, Islamic Republic of and Tonga?: 0.0%, with Iran, Islamic Republic of ahead.
How many years of comparable data are there for Iran, Islamic Republic of and Tonga?: 44 years are reported by both, from 1981 to 2024.
How do Iran, Islamic Republic of and Tonga rank globally for share of one-year-olds vaccinated against measles?: Iran, Islamic Republic of ranks 1st and Tonga ranks 1st of 194 countries.
Where does this data come from?: WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data, published as Share of one-year-olds vaccinated against measles. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Iran, Islamic Republic of vs Tonga: Share of one-year-olds vaccinated against measles. Statizoid, drawing on WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data. Retrieved 06 September 2026, from https://health.statizoid.com/compare/share-of-children-vaccinated-against-measles/iran-islamic-rep/tonga/

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<a href="https://health.statizoid.com/compare/share-of-children-vaccinated-against-measles/iran-islamic-rep/tonga/">Iran, Islamic Republic of vs Tonga: Share of one-year-olds vaccinated against measles</a> — Statizoid

About this data

Indicator: Share of one-year-olds vaccinated against measles
Unit: %
Source: WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 194 places, 7,974 data points, 1980–2024
Last refreshed: 27 August 2026

Share of one-year-olds who have had the first dose of the measles vaccine in a given year.