Sierra Leone vs Tonga: Number of one-year-olds who are not vaccinated against diphtheria

Sierra Leone
0.73 % change on previous year
in 2023
Tonga
0.5872 % change on previous year
in 2023
Sierra Leone rank
77th
Tonga rank
80th

Number of one-year-olds who are not vaccinated against diphtheria over time

  • Sierra Leone
  • Tonga
0200400600198120022023

How they compare

Sierra Leone currently reports 0.73 % change on previous year against 0.5872 % change on previous year in Tonga, a difference of 0.1428 % change on previous year.

That makes Sierra Leone's figure about 1.2 times Tonga's.

The two have swapped places 12 times across 24 shared years of data; in 2000 it was Sierra Leone ahead.

Sierra Leone ranks 77th and Tonga ranks 80th of 194 countries.

Across the 3 decades both report, Sierra Leone averaged higher in 1 and Tonga in 2.

Head to head by decade

Decade Sierra Leone Tonga Difference Ahead
2000s -6.77 % change on previous year -6.05 % change on previous year 0.7222 % change on previous year Tonga
2010s -4.21 % change on previous year 42.99 % change on previous year 47.19 % change on previous year Tonga
2020s 21.49 % change on previous year -0.3538 % change on previous year 21.84 % change on previous year Sierra Leone

Averages of every year both report within each decade.

Frequently asked questions

Which has higher number of one-year-olds who are not vaccinated against diphtheria, Sierra Leone or Tonga?
Sierra Leone, at 0.73 % change on previous year against 0.5872 % change on previous year in Tonga as of 2023.
What is the difference in number of one-year-olds who are not vaccinated against diphtheria between Sierra Leone and Tonga?
0.1428 % change on previous year, with Sierra Leone ahead.
How many years of comparable data are there for Sierra Leone and Tonga?
24 years are reported by both, from 2000 to 2023.
How do Sierra Leone and Tonga rank globally for number of one-year-olds who are not vaccinated against diphtheria?
Sierra Leone ranks 77th and Tonga ranks 80th of 194 countries.
Where does this data come from?
Statizoid (derived), published as Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus, annual growth rate. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Sierra Leone vs Tonga: Number of one-year-olds who are not vaccinated against diphtheria. Statizoid, drawing on Statizoid (derived). Retrieved 17 September 2026, from https://health.statizoid.com/compare/number-of-one-year-olds-who-are-not-vaccinated-against-diphtheria-pertussis-and-tetanus-4/sierra-leone/tonga/

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<a href="https://health.statizoid.com/compare/number-of-one-year-olds-who-are-not-vaccinated-against-diphtheria-pertussis-and-tetanus-4/sierra-leone/tonga/">Sierra Leone vs Tonga: Number of one-year-olds who are not vaccinated against diphtheria</a> — Statizoid

About this data

Indicator
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus, annual growth rate
Unit
% change on previous year
Source
Statizoid (derived)
Licence
Derived by Statizoid from the sources named on the page
Coverage
194 places, 7,686 data points, 1981–2023
Last refreshed

The year-on-year percentage change in Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus. Computed from consecutive annual observations; years either side of a gap are skipped rather than bridged.