Chad vs Madagascar: Reported cases of paralytic polio from vaccine-derived viruses
Chad
55 cases
in 2023
Madagascar
24 cases
in 2023
Chad rank
3rd
Madagascar rank
5th
Reported cases of paralytic polio from vaccine-derived viruses over time
- Chad
- Madagascar
How they compare
Chad currently reports 55 cases against 24 cases in Madagascar, a difference of 31 cases.
That makes Chad's figure about 2.3 times Madagascar's.
The two have swapped places 7 times across 23 shared years of data; in 2001 it was Madagascar ahead.
Chad ranks 3rd and Madagascar ranks 5th of 173 countries.
Across the 3 decades both report, Chad averaged higher in 2 and Madagascar in 1.
Head to head by decade
| Decade | Chad | Madagascar | Difference | Ahead |
|---|---|---|---|---|
| 2000s | 0 cases | 0.8889 cases | 0.8889 cases | Madagascar |
| 2010s | 2.7 cases | 1.1 cases | 1.6 cases | Chad |
| 2020s | 50 cases | 14 cases | 36 cases | Chad |
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 Madagascar?
- Chad, at 55 cases against 24 cases in Madagascar as of 2023.
- What is the difference in reported cases of paralytic polio from vaccine-derived viruses between Chad and Madagascar?
- 31 cases, with Chad ahead.
- How many years of comparable data are there for Chad and Madagascar?
- 23 years are reported by both, from 2001 to 2023.
- How do Chad and Madagascar rank globally for reported cases of paralytic polio from vaccine-derived viruses?
- Chad ranks 3rd and Madagascar ranks 5th 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.