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

Chad
0.1925 one-year-olds per square kilometre
in 2023
Senegal
0.2065 one-year-olds per square kilometre
in 2023
Chad rank
76th
Senegal rank
74th

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

  • Chad
  • Senegal
0.20.40.60.8198320032023

How they compare

Senegal currently reports 0.2065 one-year-olds per square kilometre against 0.1925 one-year-olds per square kilometre in Chad, a difference of 0.014 one-year-olds per square kilometre.

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

The two have swapped places 8 times across 38 shared years of data; in 1986 it was Senegal ahead.

Chad ranks 76th and Senegal ranks 74th of 192 countries.

Across the 5 decades both report, Chad averaged higher in 1 and Senegal in 4.

Head to head by decade

Decade Chad Senegal Difference Ahead
1980s 0.1524 one-year-olds per square kilometre 0.6531 one-year-olds per square kilometre 0.5007 one-year-olds per square kilometre Senegal
1990s 0.1854 one-year-olds per square kilometre 0.6308 one-year-olds per square kilometre 0.4455 one-year-olds per square kilometre Senegal
2000s 0.2486 one-year-olds per square kilometre 0.4494 one-year-olds per square kilometre 0.2008 one-year-olds per square kilometre Senegal
2010s 0.2739 one-year-olds per square kilometre 0.2153 one-year-olds per square kilometre 0.0586 one-year-olds per square kilometre Chad
2020s 0.2081 one-year-olds per square kilometre 0.2983 one-year-olds per square kilometre 0.0902 one-year-olds per square kilometre Senegal

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 Senegal?
Senegal, at 0.2065 one-year-olds per square kilometre against 0.1925 one-year-olds per square kilometre in Chad as of 2023.
What is the difference in number of one-year-olds who are not vaccinated against diphtheria between Chad and Senegal?
0.014 one-year-olds per square kilometre, with Senegal ahead.
How many years of comparable data are there for Chad and Senegal?
38 years are reported by both, from 1986 to 2023.
How do Chad and Senegal rank globally for number of one-year-olds who are not vaccinated against diphtheria?
Chad ranks 76th and Senegal ranks 74th of 192 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, per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Chad vs Senegal: Number of one-year-olds who are not vaccinated against diphtheria. Statizoid, drawing on Statizoid (derived). Retrieved 18 September 2026, from https://health.statizoid.com/compare/number-of-one-year-olds-who-are-not-vaccinated-against-diphtheria-pertussis-and-tetanus-3/chad/senegal/

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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-3/chad/senegal/">Chad vs Senegal: 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, per square kilometre
Unit
one-year-olds per square kilometre
Source
Statizoid (derived)
Licence
Derived by Statizoid from the sources named on the page
Coverage
192 places, 7,710 data points, 1980–2023
Last refreshed

Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus 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.