Reported cases of paralytic polio in Chad
Chad: Reported cases of paralytic polio was 55 cases in 2023. ◆ Volatile
Reported cases of paralytic polio in Chad, 1983–2023
Source: World Health Organization (2019); World Health Organization (2024) – processed by Our World in Data. Measured in cases.
Analysis
Chad recorded 55 cases for reported cases of paralytic polio 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 cases of paralytic polio in Chad peaked at 326 cases in 1997 and was at its lowest, 0 cases, 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.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 21.75 cases | 9 cases | 45 cases | 4 |
| 1990s | 120.83 cases | 0 cases | 326 cases | 6 |
| 2000s | 23.5 cases | 0 cases | 64 cases | 10 |
| 2010s | 19 cases | 0 cases | 132 cases | 10 |
| 2020s | 50 cases | 0 cases | 101 cases | 4 |
Countries ranked near Chad
- 1 Democratic Republic of Congo 223 cases compare
- 2 Nigeria 87 cases compare
- 4 Guinea 47 cases compare
- 5 Madagascar 24 cases compare
- 6 Mali 15 cases compare
More reference data data for Chad
- Summer temperature anomalies 1 °C (2026)
- Temperature anomalies by month 3.03 °C (2026)
- Spring temperature anomalies 0.1244 °C (2026)
- Chief executive of the government is elected 1 (2025)
- Universal right to vote 2 (2025)
- Competitive elections 0 (2025)
- Consumer price index 149.69 2010 = 100 (2025)
- Civil liberties rating 6 (2025)
- Free country 0 (2025)
- Elected parliament 1 (2025)
Frequently asked questions
- What is reported cases of paralytic polio in Chad?
- Reported cases of paralytic polio in Chad was 55 cases in 2023, according to World Health Organization (2019); World Health Organization (2024) – processed by Our World in Data.
- What is the highest reported cases of paralytic polio recorded in Chad?
- The highest recorded value was 326 cases in 1997.
- What is the lowest reported cases of paralytic polio recorded in Chad?
- The lowest recorded value was 0 cases in 1994.
- How does Chad rank for reported cases of paralytic polio?
- Chad ranks 3rd out of 199 countries with data for 2023.
- Is reported cases of paralytic polio 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 World Health Organization (2019); World Health Organization (2024) – processed by Our World in Data, published as part of Reported cases of paralytic polio. 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).
About this data
The sum of wild poliovirus cases and circulating vaccine derived poliovirus cases.