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

Chad
0.6357 % change on previous year
in 2023
Sierra Leone
0.73 % change on previous year
in 2023
Chad rank
79th
Sierra Leone rank
77th

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

  • Chad
  • Sierra Leone
-50050100198420032023

How they compare

Sierra Leone currently reports 0.73 % change on previous year against 0.6357 % change on previous year in Chad, a difference of 0.0943 % change on previous year.

That makes Sierra Leone's figure about 1.1 times Chad's.

The two have swapped places 9 times across 24 shared years of data; in 2000 it was Chad ahead.

Chad ranks 79th and Sierra Leone ranks 77th of 194 countries.

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

Head to head by decade

Decade Chad Sierra Leone Difference Ahead
2000s 7.39 % change on previous year -6.77 % change on previous year 14.16 % change on previous year Chad
2010s -1.48 % change on previous year -4.21 % change on previous year 2.72 % change on previous year Chad
2020s -5.59 % change on previous year 21.49 % change on previous year 27.08 % 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, Chad or Sierra Leone?
Sierra Leone, at 0.73 % 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 Sierra Leone?
0.0943 % change on previous year, with Sierra Leone ahead.
How many years of comparable data are there for Chad and Sierra Leone?
24 years are reported by both, from 2000 to 2023.
How do Chad and Sierra Leone rank globally for number of one-year-olds who are not vaccinated against diphtheria?
Chad ranks 79th and Sierra Leone ranks 77th 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.

Individual pages

Share, cite or embed this page

Cite this page

Chad vs Sierra Leone: 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/sierra-leone/

Embed or link this data

Paste this into a page to link back to these figures. The data itself is free to reuse under Derived by Statizoid from the sources named on the page; please keep the attribution.

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