What is the difference in reported versus estimated cases of polio between Saudi Arabia and Sierra Leone?

0 cases, with Saudi Arabia ahead.

How many years of comparable data are there for Saudi Arabia and Sierra Leone?

43 years are reported by both, from 1980 to 2023.

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.

Saudi Arabia vs Sierra Leone: Reported versus estimated cases of polio

Saudi Arabia

0 cases

in 2023

Sierra Leone

0 cases

in 2023

Saudi Arabia rank

26th

Sierra Leone rank

26th

Reported versus estimated cases of polio over time

Saudi Arabia
Sierra Leone

How they compare

Saudi Arabia currently reports 0 cases against 0 cases in Sierra Leone, a difference of 0 cases.

The two have swapped places 5 times across 43 shared years of data; in 1980 it was Saudi Arabia ahead.

Saudi Arabia ranks 26th and Sierra Leone ranks 26th of 199 countries.

Across the 5 decades both report, Saudi Arabia averaged higher in 1 and Sierra Leone in 4.

Head to head by decade

Decade	Saudi Arabia	Sierra Leone	Difference	Ahead
1980s	78.4 cases	39.3 cases	39.1 cases	Saudi Arabia
1990s	2.33 cases	14.33 cases	12 cases	Sierra Leone
2000s	0.2 cases	4.5 cases	4.3 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, Saudi Arabia or Sierra Leone?: Saudi Arabia, at 0 cases against 0 cases in Sierra Leone as of 2023.
What is the difference in reported versus estimated cases of polio between Saudi Arabia and Sierra Leone?: 0 cases, with Saudi Arabia ahead.
How many years of comparable data are there for Saudi Arabia and Sierra Leone?: 43 years are reported by both, from 1980 to 2023.
How do Saudi Arabia and Sierra Leone rank globally for reported versus estimated cases of polio?: Saudi Arabia 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.

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Saudi Arabia vs Sierra Leone: Reported versus estimated cases of polio. Statizoid, drawing on World Health Organization (2019); World Health Organization (2024) – processed by Our World in Data. Retrieved 02 September 2026, from https://reference.statizoid.com/compare/reported-vs-estimated-total-number-of-paralytic-polio-cases-globally/saudi-arabia/sierra-leone/

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<a href="https://reference.statizoid.com/compare/reported-vs-estimated-total-number-of-paralytic-polio-cases-globally/saudi-arabia/sierra-leone/">Saudi Arabia vs Sierra Leone: Reported versus estimated cases of polio</a> — Statizoid

About this data

Indicator: Reported versus estimated cases of polio
Unit: cases
Source: World Health Organization (2019); World Health Organization (2024) – processed by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 199 places, 7,608 data points, 1980–2023
Last refreshed: 28 August 2026

Sum of wild poliovirus cases and circulating vaccine derived poliovirus cases.