Brazil vs Sierra Leone: Reported versus estimated cases of polio
Brazil
0 cases
in 2023
Sierra Leone
0 cases
in 2023
Brazil rank
26th
Sierra Leone rank
26th
Reported versus estimated cases of polio over time
- Brazil
- Sierra Leone
How they compare
Brazil currently reports 0 cases against 0 cases in Sierra Leone, a difference of 0 cases.
The two have swapped places 3 times across 43 shared years of data; in 1980 it was Brazil ahead.
Brazil ranks 26th and Sierra Leone ranks 26th of 199 countries.
Across the 5 decades both report, Brazil averaged higher in 1 and Sierra Leone in 4.
Head to head by decade
| Decade | Brazil | Sierra Leone | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 293 cases | 39.3 cases | 253.7 cases | Brazil |
| 1990s | 0 cases | 14.33 cases | 14.33 cases | Sierra Leone |
| 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, Brazil or Sierra Leone?
- Brazil, at 0 cases against 0 cases in Sierra Leone as of 2023.
- What is the difference in reported versus estimated cases of polio between Brazil and Sierra Leone?
- 0 cases, with Brazil ahead.
- How many years of comparable data are there for Brazil and Sierra Leone?
- 43 years are reported by both, from 1980 to 2023.
- How do Brazil and Sierra Leone rank globally for reported versus estimated cases of polio?
- Brazil 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.