The number of reported paralytic polio cases in Chad
Chad: The number of reported paralytic polio cases was 55 in 2023. ◆ Volatile
The number of reported paralytic polio cases in Chad, 1983–2023
Source: Our World in Data.
Analysis
Chad recorded 55 for the number of reported paralytic polio cases in 2023.
The figure is up 25.0% on the previous year and up 1,733.3% over ten years.
Over the whole period, the number of reported paralytic polio cases in Chad peaked at 326 in 1997 and was at its lowest, 0, in 1994.
Chad ranks 3rd of 199 countries on this measure, in the top 10%.
The series is highly variable year to year, so single readings are best treated with caution.
The number of reported paralytic polio cases in Chad, year by year
| Year | Value | Change |
|---|---|---|
| 1983 | 24 | — |
| 1984 | 9 | -62.5% |
| 1985 | 45 | +400.0% |
| 1986 | 9 | -80.0% |
| 1994 | 0 | -100.0% |
| 1995 | 192 | — |
| 1996 | 93 | -51.6% |
| 1997 | 326 | +250.5% |
| 1998 | 4 | -98.8% |
| 1999 | 110 | +2650.0% |
| 2000 | 60 | -45.5% |
| 2001 | 0 | -100.0% |
| 2002 | 0 | — |
| 2003 | 25 | — |
| 2004 | 24 | -4.0% |
| 2005 | 2 | -91.7% |
| 2006 | 1 | -50.0% |
| 2007 | 22 | +2100.0% |
| 2008 | 37 | +68.2% |
| 2009 | 64 | +73.0% |
| 2010 | 27 | -57.8% |
| 2011 | 132 | +388.9% |
| 2012 | 17 | -87.1% |
| 2013 | 3 | -82.4% |
| 2014 | 0 | -100.0% |
| 2015 | 0 | — |
| 2016 | 0 | — |
| 2017 | 0 | — |
| 2018 | 0 | — |
| 2019 | 11 | — |
| 2020 | 101 | +818.2% |
| 2021 | 0 | -100.0% |
| 2022 | 44 | — |
| 2023 | 55 | +25.0% |
Chad compared with similar countries
- Chad's 55 is above the median for low income countries, which is 1, 55.0× the median. (25 countries reporting)
Biggest year-on-year movements
Years where The number of reported paralytic polio cases in Chad changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 1999 | +2650.0% | 4 | 110 |
| 2007 | +2100.0% | 1 | 22 |
| 2020 | +818.2% | 11 | 101 |
| 1985 | +400.0% | 9 | 45 |
| 2011 | +388.9% | 27 | 132 |
Averages by decade
| Decade | Average | Lowest | Highest | 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 Democratic Republic of Congo 223 compare
- 2 Nigeria 87 compare
- 4 Guinea 47 compare
- 5 Madagascar 24 compare
- 6 Mali 15 compare
More reference data data for Chad
- Emission Totals - Indirect emissions (N2O) - Manure applied to Soils 0.3078 (2050)
- Emission Totals - Indirect emissions (N2O) - Manure left on Pasture 13.52 (2050)
- Emission Totals - Indirect emissions (N2O) - IPCC Agriculture 14.01 (2050)
- Emission Totals - Indirect emissions (N2O) - Crop Residues 0.1797 (2050)
- Emission Totals - Indirect emissions (N2O) - Agricultural Soils 14.01 (2050)
- Emission Totals - Emissions (N2O) - Manure applied to Soils 1.03 (2050)
- Emission Totals - Emissions (N2O) - Manure Management 0.5525 (2050)
- Emission Totals - Emissions (N2O) - Manure left on Pasture 58.55 (2050)
- Emission Totals - Emissions (N2O) - IPCC Agriculture 61.14 (2050)
- Emission Totals - Emissions (N2O) - Crop Residues 0.9785 (2050)
Frequently asked questions
- What is the number of reported paralytic polio cases in Chad?
- The number of reported paralytic polio cases in Chad was 55 in 2023, according to Our World in Data.
- What is the highest the number of reported paralytic polio cases recorded in Chad?
- The highest recorded value was 326 in 1997.
- What is the lowest the number of reported paralytic polio cases recorded in Chad?
- The lowest recorded value was 0 in 1994.
- How does Chad rank for the number of reported paralytic polio cases?
- Chad ranks 3rd out of 199 countries with data for 2023.
- Is the number of reported paralytic polio cases 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 The number of reported paralytic polio cases. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 34 observations, free to reuse under CC BY 4.0 (Our World in Data).