Sao Tome and Principe vs Syria: Number of one-year-olds who are not vaccinated against diphtheria

Sao Tome and Principe
0.8465 one-year-olds per square kilometre
in 2023
Syria
0.8835 one-year-olds per square kilometre
in 2023
Sao Tome and Principe rank
19th
Syria rank
17th

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

  • Sao Tome and Principe
  • Syria
0123198020012023

How they compare

Syria currently reports 0.8835 one-year-olds per square kilometre against 0.8465 one-year-olds per square kilometre in Sao Tome and Principe, a difference of 0.037 one-year-olds per square kilometre.

The two have swapped places 5 times across 43 shared years of data; in 1981 it was Sao Tome and Principe ahead.

Sao Tome and Principe ranks 19th and Syria ranks 17th of 192 countries.

Across the 5 decades both report, Sao Tome and Principe averaged higher in 2 and Syria in 3.

Head to head by decade

Decade Sao Tome and Principe Syria Difference Ahead
1980s 1.88 one-year-olds per square kilometre 1.23 one-year-olds per square kilometre 0.6488 one-year-olds per square kilometre Sao Tome and Principe
1990s 1.13 one-year-olds per square kilometre 0.2903 one-year-olds per square kilometre 0.8395 one-year-olds per square kilometre Sao Tome and Principe
2000s 0.2915 one-year-olds per square kilometre 0.4912 one-year-olds per square kilometre 0.1997 one-year-olds per square kilometre Syria
2010s 0.259 one-year-olds per square kilometre 1.03 one-year-olds per square kilometre 0.77 one-year-olds per square kilometre Syria
2020s 0.4484 one-year-olds per square kilometre 0.8969 one-year-olds per square kilometre 0.4485 one-year-olds per square kilometre Syria

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, Sao Tome and Principe or Syria?
Syria, at 0.8835 one-year-olds per square kilometre against 0.8465 one-year-olds per square kilometre in Sao Tome and Principe as of 2023.
What is the difference in number of one-year-olds who are not vaccinated against diphtheria between Sao Tome and Principe and Syria?
0.037 one-year-olds per square kilometre, with Syria ahead.
How many years of comparable data are there for Sao Tome and Principe and Syria?
43 years are reported by both, from 1981 to 2023.
How do Sao Tome and Principe and Syria rank globally for number of one-year-olds who are not vaccinated against diphtheria?
Sao Tome and Principe ranks 19th and Syria ranks 17th 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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Sao Tome and Principe vs Syria: 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/sao-tome-and-principe/syrian-arab-republic/

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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/sao-tome-and-principe/syrian-arab-republic/">Sao Tome and Principe vs Syria: 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.