Reported vs estimated total number of paralytic polio cases globally in Chad

Chad: Reported vs estimated total number of paralytic polio cases globally was 55 in 2023. β—† Volatile

Latest (2023)
55
Change on year
up 25.0%
World rank
3rd
of 196 countries
All-time high
326
in 1997
All-time low
0
in 1994
Years of data
34
1983–2023

Reported vs estimated total number of paralytic polio cases globally in Chad, 1983–2023

01002003001983200320231983: 241984: 91985: 451986: 91994: 01995: 1921996: 931997: 3261998: 41999: 1102000: 602001: 02002: 02003: 252004: 242005: 22006: 12007: 222008: 372009: 642010: 272011: 1322012: 172013: 32014: 02015: 02016: 02017: 02018: 02019: 112020: 1012021: 02022: 442023: 55

Source: Our World in Data.

Analysis

Chad recorded 55 for reported vs estimated total number of paralytic polio cases globally in 2023.

The figure is up 25.0% on the previous year and up 1,733.3% over ten years.

Over the whole period, reported vs estimated total number of paralytic polio cases globally in Chad peaked at 326 in 1997 and was at its lowest, 0, in 1994.

Chad ranks 3rd of 196 countries on this measure, in the top 10%.

The series is highly variable year to year, so single readings are best treated with caution.

Averages by decade

DecadeAverage LowestHighest Years
1980s 21.75 9 45 4
1990s 120.83 0 326 6
2000s 23.5 0 64 10
2010s 19 0 132 10
2020s 50 0 101 4

Countries ranked near Chad

  1. 1 Cook Islands 0 compare
  2. 1 Democratic Republic of the Congo 223 compare
  3. 1 Niue 0 compare
  4. 2 Nigeria 87 compare
  5. 4 Guinea 47 compare
  6. 5 Madagascar 24 compare
  7. 6 Mali 15 compare

See the full ranking of 199 places β†’

More reference data data for Chad

All data for Chad β†’

Frequently asked questions

What is reported vs estimated total number of paralytic polio cases globally in Chad?
Reported vs estimated total number of paralytic polio cases globally in Chad was 55 in 2023, according to Our World in Data.
What is the highest reported vs estimated total number of paralytic polio cases globally recorded in Chad?
The highest recorded value was 326 in 1997.
What is the lowest reported vs estimated total number of paralytic polio cases globally recorded in Chad?
The lowest recorded value was 0 in 1994.
How does Chad rank for reported vs estimated total number of paralytic polio cases globally?
Chad ranks 3rd out of 196 countries with data for 2023.
Is reported vs estimated total number of paralytic polio cases globally rising or falling in Chad?
Over the last ten years it is up 1,733.3%. The long-run trend across the full record is volatile.
Where does this Chad data come from?
The figures come from Our World in Data, published as part of Reported vs estimated total number of paralytic polio cases globally. Statizoid updates them automatically from the source API.

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Reported vs estimated total number of paralytic polio cases globally in Chad. Statizoid, drawing on Our World in Data. Retrieved 17 August 2026, from https://reference.statizoid.com/stat/reported-vs-estimated-total-number-of-paralytic-polio-cases-globally/chad/

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<a href="https://reference.statizoid.com/stat/reported-vs-estimated-total-number-of-paralytic-polio-cases-globally/chad/">Reported vs estimated total number of paralytic polio cases globally in Chad</a> β€” Statizoid

About this data

Indicator
Reported vs estimated total number of paralytic polio cases globally
Source
Our World in Data
Licence
CC BY 4.0 (Our World in Data)
Coverage
199 places, 7,608 data points, 1980–2023
Last refreshed