Norway vs Tanzania: Number of one-year-olds who are not vaccinated against diphtheria

Norway
32.17 % change on previous year
in 2023
Tanzania
33.4 % change on previous year
in 2023
Norway rank
32nd
Tanzania rank
29th

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

  • Norway
  • Tanzania
-1000100200198120022023

How they compare

Tanzania currently reports 33.4 % change on previous year against 32.17 % change on previous year in Norway, a difference of 1.23 % change on previous year.

The two have swapped places 17 times across 40 shared years of data; in 1984 it was Norway ahead.

Norway ranks 32nd and Tanzania ranks 29th of 194 countries.

Across the 5 decades both report, Norway averaged higher in 2 and Tanzania in 3.

Head to head by decade

Decade Norway Tanzania Difference Ahead
1980s 12.49 % change on previous year -6.36 % change on previous year 18.85 % change on previous year Norway
1990s 14.38 % change on previous year 3.54 % change on previous year 10.83 % change on previous year Norway
2000s -0.9641 % change on previous year 6.75 % change on previous year 7.72 % change on previous year Tanzania
2010s -5.6 % change on previous year 7.47 % change on previous year 13.07 % change on previous year Tanzania
2020s 7.51 % change on previous year 22.23 % change on previous year 14.72 % change on previous year Tanzania

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, Norway or Tanzania?
Tanzania, at 33.4 % change on previous year against 32.17 % change on previous year in Norway as of 2023.
What is the difference in number of one-year-olds who are not vaccinated against diphtheria between Norway and Tanzania?
1.23 % change on previous year, with Tanzania ahead.
How many years of comparable data are there for Norway and Tanzania?
40 years are reported by both, from 1984 to 2023.
How do Norway and Tanzania rank globally for number of one-year-olds who are not vaccinated against diphtheria?
Norway ranks 32nd and Tanzania ranks 29th 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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Norway vs Tanzania: 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/norway/tanzania/

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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/norway/tanzania/">Norway vs Tanzania: 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.