Chad vs Nigeria: Reported cases of paralytic polio from vaccine-derived viruses
Chad
55 cases
in 2023
Nigeria
87 cases
in 2023
Chad rank
3rd
Nigeria rank
2nd
Reported cases of paralytic polio from vaccine-derived viruses over time
- Chad
- Nigeria
How they compare
Nigeria currently reports 87 cases against 55 cases in Chad, a difference of 32 cases.
That makes Nigeria's figure about 1.6 times Chad's.
The two have swapped places 4 times across 23 shared years of data; in 2001 it was Nigeria ahead.
Chad ranks 3rd and Nigeria ranks 2nd of 173 countries.
Nigeria has averaged higher in every one of the 3 decades both report.
Head to head by decade
| Decade | Chad | Nigeria | Difference | Ahead |
|---|---|---|---|---|
| 2000s | 0 cases | 34.67 cases | 34.67 cases | Nigeria |
| 2010s | 2.7 cases | 15.6 cases | 12.9 cases | Nigeria |
| 2020s | 50 cases | 140.5 cases | 90.5 cases | Nigeria |
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 Nigeria?
- Nigeria, at 87 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 Nigeria?
- 32 cases, with Nigeria ahead.
- How many years of comparable data are there for Chad and Nigeria?
- 23 years are reported by both, from 2001 to 2023.
- How do Chad and Nigeria rank globally for reported cases of paralytic polio from vaccine-derived viruses?
- Chad ranks 3rd and Nigeria ranks 2nd 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.
Individual pages
About this data
Number of cases of circulating vaccine-derived poliovirus detected in a given year.