How many years of comparable data are there for Chad and Democratic Republic of Congo?

41 years are reported by both, from 1984 to 2024.

Where does this data come from?

WHO and UNICEF (http://www.who.int/immunization/monitoring_surveillance/en/), published as Immunization, Pol3 (% of one-year-old children). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Chad vs Democratic Republic of Congo: Immunization, Pol3 (% of one-year-old children)

Chad

67.0%

in 2024

Democratic Republic of Congo

65.0%

in 2024

Chad rank

172nd

Democratic Republic of Congo rank

175th

Immunization, Pol3 (% of one-year-old children) over time

Chad
Democratic Republic of Congo

How they compare

Chad currently reports 67.0% against 65.0% in Democratic Republic of Congo, a difference of 2.0%.

The two have swapped places 5 times across 41 shared years of data; in 1984 it was Democratic Republic of Congo ahead.

Chad ranks 172nd and Democratic Republic of Congo ranks 175th of 193 countries.

Democratic Republic of Congo has averaged higher in every one of the 5 decades both report.

Head to head by decade

Decade	Chad	Democratic Republic of Congo	Difference	Ahead
1980s	10.3%	36.7%	26.3%	Democratic Republic of Congo
1990s	20.3%	23.6%	3.3%	Democratic Republic of Congo
2000s	34.0%	51.5%	17.5%	Democratic Republic of Congo
2010s	45.5%	69.7%	24.2%	Democratic Republic of Congo
2020s	60.0%	65.8%	5.8%	Democratic Republic of Congo

Averages of every year both report within each decade.

Frequently asked questions

Which has higher immunization, pol3, Chad or Democratic Republic of Congo?: Chad, at 67.0% against 65.0% in Democratic Republic of Congo as of 2024.
What is the difference in immunization, pol3 between Chad and Democratic Republic of Congo?: 2.0%, with Chad ahead.
How many years of comparable data are there for Chad and Democratic Republic of Congo?: 41 years are reported by both, from 1984 to 2024.
How do Chad and Democratic Republic of Congo rank globally for immunization, pol3?: Chad ranks 172nd and Democratic Republic of Congo ranks 175th of 193 countries.
Where does this data come from?: WHO and UNICEF (http://www.who.int/immunization/monitoring_surveillance/en/), published as Immunization, Pol3 (% of one-year-old children). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Chad vs Democratic Republic of Congo: Immunization, Pol3. Statizoid, drawing on WHO and UNICEF (http://www.who.int/immunization/monitoring_surveillance/en/). Retrieved 11 November 2026, from https://health.statizoid.com/compare/immunization-pol3-percent-of-one-year-old-children/chad/congo-dem-rep/

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<a href="https://health.statizoid.com/compare/immunization-pol3-percent-of-one-year-old-children/chad/congo-dem-rep/">Chad vs Democratic Republic of Congo: Immunization, Pol3</a> — Statizoid

About this data

Indicator: Immunization, Pol3 (% of one-year-old children)
Unit: % of one-year-old children
Source: WHO and UNICEF (http://www.who.int/immunization/monitoring_surveillance/en/)
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 236 places, 9,949 data points, 1980–2024
Last refreshed: 29 October 2026

Child immunization rate, polio, is the percentage of children ages 12-23 months who received polio vaccinations before 12 months or at any time before the survey. A child is considered adequately immunized after three doses.