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

Chad
0.1925 one-year-olds per square kilometre
in 2023
El Salvador
0.1906 one-year-olds per square kilometre
in 2023
Chad rank
76th
El Salvador rank
77th

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

  • Chad
  • El Salvador
0246198020012023

How they compare

Chad currently reports 0.1925 one-year-olds per square kilometre against 0.1906 one-year-olds per square kilometre in El Salvador, a difference of 0.0019 one-year-olds per square kilometre.

The two have swapped places 15 times across 41 shared years of data; in 1983 it was El Salvador ahead.

Chad ranks 76th and El Salvador ranks 77th of 192 countries.

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

Head to head by decade

Decade Chad El Salvador Difference Ahead
1980s 0.1527 one-year-olds per square kilometre 4 one-year-olds per square kilometre 3.84 one-year-olds per square kilometre El Salvador
1990s 0.1854 one-year-olds per square kilometre 1.18 one-year-olds per square kilometre 0.9921 one-year-olds per square kilometre El Salvador
2000s 0.2486 one-year-olds per square kilometre 0.4485 one-year-olds per square kilometre 0.1999 one-year-olds per square kilometre El Salvador
2010s 0.2739 one-year-olds per square kilometre 0.4026 one-year-olds per square kilometre 0.1287 one-year-olds per square kilometre El Salvador
2020s 0.2081 one-year-olds per square kilometre 0.2778 one-year-olds per square kilometre 0.0697 one-year-olds per square kilometre El Salvador

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 El Salvador?
Chad, at 0.1925 one-year-olds per square kilometre against 0.1906 one-year-olds per square kilometre in El Salvador as of 2023.
What is the difference in number of one-year-olds who are not vaccinated against diphtheria between Chad and El Salvador?
0.0019 one-year-olds per square kilometre, with Chad ahead.
How many years of comparable data are there for Chad and El Salvador?
41 years are reported by both, from 1983 to 2023.
How do Chad and El Salvador rank globally for number of one-year-olds who are not vaccinated against diphtheria?
Chad ranks 76th and El Salvador ranks 77th 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 El Salvador: 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-3/chad/el-salvador/

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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/el-salvador/">Chad vs El Salvador: 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.