Chad vs Congo, Democratic Republic of the: Reported cases of paralytic polio from vaccine-derived viruses

Chad
55 cases
in 2023
Congo, Democratic Republic of the
223 cases
in 2023
Chad rank
3rd
Congo, Democratic Republic of the rank
1st

Reported cases of paralytic polio from vaccine-derived viruses over time

  • Chad
  • Congo, Democratic Republic of the
0200400600200120122023

How they compare

Congo, Democratic Republic of the currently reports 223 cases against 55 cases in Chad, a difference of 168 cases.

That makes Congo, Democratic Republic of the's figure about 4.1 times Chad's.

The two have swapped places 4 times across 23 shared years of data; in 2001 it was Congo, Democratic Republic of the ahead.

Chad ranks 3rd and Congo, Democratic Republic of the ranks 1st of 173 countries.

Congo, Democratic Republic of the has averaged higher in every one of the 3 decades both report.

Head to head by decade

Decade Chad Congo, Democratic Republic of the Difference Ahead
2000s 0 cases 2 cases 2 cases Congo, Democratic Republic of the
2010s 2.7 cases 17.6 cases 14.9 cases Congo, Democratic Republic of the
2020s 50 cases 213.25 cases 163.25 cases Congo, Democratic Republic of the

Averages of every year both report within each decade.

Frequently asked questions

Which has higher reported cases of paralytic polio from vaccine-derived viruses, Chad or Congo, Democratic Republic of the?
Congo, Democratic Republic of the, at 223 cases against 55 cases in Chad as of 2023.
What is the difference in reported cases of paralytic polio from vaccine-derived viruses between Chad and Congo, Democratic Republic of the?
168 cases, with Congo, Democratic Republic of the ahead.
How many years of comparable data are there for Chad and Congo, Democratic Republic of the?
23 years are reported by both, from 2001 to 2023.
How do Chad and Congo, Democratic Republic of the rank globally for reported cases of paralytic polio from vaccine-derived viruses?
Chad ranks 3rd and Congo, Democratic Republic of the ranks 1st of 173 countries.
Where does this data come from?
World Health Organization (2024) – processed by Our World in Data, published as Reported cases of paralytic polio from vaccine-derived viruses. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Chad vs Congo, Democratic Republic of the: Reported cases of paralytic polio from vaccine-derived viruses. Statizoid, drawing on World Health Organization (2024) – processed by Our World in Data. Retrieved 06 September 2026, from https://health.statizoid.com/compare/cases-of-paralytic-polio-from-vaccine-derived-viruses/chad/congo-dem-rep/

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About this data

Indicator
Reported cases of paralytic polio from vaccine-derived viruses
Unit
cases
Source
World Health Organization (2024) – processed by Our World in Data
Licence
CC BY 4.0 (Our World in Data)
Coverage
173 places, 3,956 data points, 2001–2023
Last refreshed

Number of cases of circulating vaccine-derived poliovirus detected in a given year.