Chad vs Seychelles: Number of one-year-olds who are not vaccinated against diphtheria

Chad
0.6357 % change on previous year
in 2023
Seychelles
0.6696 % change on previous year
in 2023
Chad rank
79th
Seychelles rank
78th

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

  • Chad
  • Seychelles
-1000100200198220022023

How they compare

Seychelles currently reports 0.6696 % change on previous year against 0.6357 % change on previous year in Chad, a difference of 0.0339 % change on previous year.

That makes Seychelles's figure about 1.1 times Chad's.

The two have swapped places 22 times across 40 shared years of data; in 1984 it was Seychelles ahead.

Chad ranks 79th and Seychelles ranks 78th of 194 countries.

Seychelles has averaged higher in every one of the 5 decades both report.

Head to head by decade

Decade Chad Seychelles Difference Ahead
1980s 1.16 % change on previous year 30.27 % change on previous year 29.12 % change on previous year Seychelles
1990s 0.4376 % change on previous year 7.55 % change on previous year 7.11 % change on previous year Seychelles
2000s 7.39 % change on previous year 12.38 % change on previous year 5 % change on previous year Seychelles
2010s -1.48 % change on previous year 21.28 % change on previous year 22.77 % change on previous year Seychelles
2020s -5.59 % change on previous year 63.43 % change on previous year 69.02 % change on previous year Seychelles

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, Chad or Seychelles?
Seychelles, at 0.6696 % change on previous year against 0.6357 % change on previous year in Chad as of 2023.
What is the difference in number of one-year-olds who are not vaccinated against diphtheria between Chad and Seychelles?
0.0339 % change on previous year, with Seychelles ahead.
How many years of comparable data are there for Chad and Seychelles?
40 years are reported by both, from 1984 to 2023.
How do Chad and Seychelles rank globally for number of one-year-olds who are not vaccinated against diphtheria?
Chad ranks 79th and Seychelles ranks 78th 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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Chad vs Seychelles: 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/chad/seychelles/

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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/chad/seychelles/">Chad vs Seychelles: 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.