Chad vs Mali: Reported cases of paralytic polio from vaccine-derived viruses
Chad
55 cases
in 2023
Mali
15 cases
in 2023
Chad rank
3rd
Mali rank
6th
Reported cases of paralytic polio from vaccine-derived viruses over time
- Chad
- Mali
How they compare
Chad currently reports 55 cases against 15 cases in Mali, a difference of 40 cases.
That makes Chad's figure about 3.7 times Mali's.
The two have swapped places 7 times across 23 shared years of data; in 2001 it was Mali ahead.
Chad ranks 3rd and Mali ranks 6th of 173 countries.
Chad has averaged higher in every one of the 3 decades both report.
Head to head by decade
| Decade | Chad | Mali | Difference | Ahead |
|---|---|---|---|---|
| 2000s | 0 cases | 0 cases | 0 cases | — |
| 2010s | 2.7 cases | 0 cases | 2.7 cases | Chad |
| 2020s | 50 cases | 17.25 cases | 32.75 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 Mali?
- Chad, at 55 cases against 15 cases in Mali as of 2023.
- What is the difference in reported cases of paralytic polio from vaccine-derived viruses between Chad and Mali?
- 40 cases, with Chad ahead.
- How many years of comparable data are there for Chad and Mali?
- 23 years are reported by both, from 2001 to 2023.
- How do Chad and Mali rank globally for reported cases of paralytic polio from vaccine-derived viruses?
- Chad ranks 3rd and Mali ranks 6th 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.