Azerbaijan vs Sierra Leone: Reported versus estimated cases of polio
Azerbaijan
0 cases
in 2023
Sierra Leone
0 cases
in 2023
Azerbaijan rank
26th
Sierra Leone rank
26th
Reported versus estimated cases of polio over time
- Azerbaijan
- Sierra Leone
How they compare
Azerbaijan currently reports 0 cases against 0 cases in Sierra Leone, a difference of 0 cases.
The two have swapped places 2 times across 32 shared years of data; in 1991 it was Sierra Leone ahead.
Azerbaijan ranks 26th and Sierra Leone ranks 26th of 199 countries.
Across the 4 decades both report, Azerbaijan averaged higher in 1 and Sierra Leone in 3.
Head to head by decade
| Decade | Azerbaijan | Sierra Leone | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 16.62 cases | 11.38 cases | 5.25 cases | Azerbaijan |
| 2000s | 0 cases | 4.5 cases | 4.5 cases | Sierra Leone |
| 2010s | 0 cases | 0.1 cases | 0.1 cases | Sierra Leone |
| 2020s | 0 cases | 3.75 cases | 3.75 cases | Sierra Leone |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher reported versus estimated cases of polio, Azerbaijan or Sierra Leone?
- Azerbaijan, at 0 cases against 0 cases in Sierra Leone as of 2023.
- What is the difference in reported versus estimated cases of polio between Azerbaijan and Sierra Leone?
- 0 cases, with Azerbaijan ahead.
- How many years of comparable data are there for Azerbaijan and Sierra Leone?
- 32 years are reported by both, from 1991 to 2023.
- How do Azerbaijan and Sierra Leone rank globally for reported versus estimated cases of polio?
- Azerbaijan ranks 26th and Sierra Leone ranks 26th of 199 countries.
- Where does this data come from?
- World Health Organization (2019); World Health Organization (2024) – processed by Our World in Data, published as Reported versus estimated cases of polio. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Sum of wild poliovirus cases and circulating vaccine derived poliovirus cases.