Sierra Leone vs United States of America: Reported versus estimated cases of polio
Sierra Leone
0 cases
in 2023
United States of America
0 cases
in 2023
Sierra Leone rank
26th
United States of America rank
26th
Reported versus estimated cases of polio over time
- Sierra Leone
- United States of America
How they compare
Sierra Leone currently reports 0 cases against 0 cases in United States of America, a difference of 0 cases.
The two have swapped places 7 times across 43 shared years of data; in 1980 it was Sierra Leone ahead.
Sierra Leone ranks 26th and United States of America ranks 26th of 199 countries.
Sierra Leone has averaged higher in every one of the 5 decades both report.
Head to head by decade
| Decade | Sierra Leone | United States of America | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 39.3 cases | 6.1 cases | 33.2 cases | Sierra Leone |
| 1990s | 14.33 cases | 0 cases | 14.33 cases | Sierra Leone |
| 2000s | 4.5 cases | 0 cases | 4.5 cases | Sierra Leone |
| 2010s | 0.1 cases | 0 cases | 0.1 cases | Sierra Leone |
| 2020s | 3.75 cases | 0.25 cases | 3.5 cases | Sierra Leone |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher reported versus estimated cases of polio, Sierra Leone or United States of America?
- Sierra Leone, at 0 cases against 0 cases in United States of America as of 2023.
- What is the difference in reported versus estimated cases of polio between Sierra Leone and United States of America?
- 0 cases, with Sierra Leone ahead.
- How many years of comparable data are there for Sierra Leone and United States of America?
- 43 years are reported by both, from 1980 to 2023.
- How do Sierra Leone and United States of America rank globally for reported versus estimated cases of polio?
- Sierra Leone ranks 26th and United States of America 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.