What is the difference in reported versus estimated cases of polio between Sierra Leone and Syrian Arab Republic?

0 cases, with Sierra Leone ahead.

How many years of comparable data are there for Sierra Leone and Syrian Arab Republic?

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.

Sierra Leone vs Syrian Arab Republic: Reported versus estimated cases of polio

Sierra Leone

0 cases

in 2023

Syrian Arab Republic

0 cases

in 2023

Sierra Leone rank

26th

Syrian Arab Republic rank

26th

Reported versus estimated cases of polio over time

Sierra Leone
Syrian Arab Republic

How they compare

Sierra Leone currently reports 0 cases against 0 cases in Syrian Arab Republic, a difference of 0 cases.

The two have swapped places 12 times across 43 shared years of data; in 1980 it was Syrian Arab Republic ahead.

Sierra Leone ranks 26th and Syrian Arab Republic ranks 26th of 199 countries.

Across the 5 decades both report, Sierra Leone averaged higher in 3 and Syrian Arab Republic in 2.

Head to head by decade

Decade	Sierra Leone	Syrian Arab Republic	Difference	Ahead
1980s	39.3 cases	104.5 cases	65.2 cases	Syrian Arab Republic
1990s	14.33 cases	7.33 cases	7 cases	Sierra Leone
2000s	4.5 cases	0 cases	4.5 cases	Sierra Leone
2010s	0.1 cases	11 cases	10.9 cases	Syrian Arab Republic
2020s	3.75 cases	0 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, Sierra Leone or Syrian Arab Republic?: Sierra Leone, at 0 cases against 0 cases in Syrian Arab Republic as of 2023.
What is the difference in reported versus estimated cases of polio between Sierra Leone and Syrian Arab Republic?: 0 cases, with Sierra Leone ahead.
How many years of comparable data are there for Sierra Leone and Syrian Arab Republic?: 43 years are reported by both, from 1980 to 2023.
How do Sierra Leone and Syrian Arab Republic rank globally for reported versus estimated cases of polio?: Sierra Leone ranks 26th and Syrian Arab Republic 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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Sierra Leone vs Syrian Arab Republic: Reported versus estimated cases of polio. Statizoid, drawing on World Health Organization (2019); World Health Organization (2024) – processed by Our World in Data. Retrieved 04 September 2026, from https://reference.statizoid.com/compare/reported-vs-estimated-total-number-of-paralytic-polio-cases-globally/sierra-leone/syrian-arab-republic/

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Paste this into a page to link back to these figures. The data itself is free to reuse under CC BY 4.0 (Our World in Data); please keep the attribution.

<a href="https://reference.statizoid.com/compare/reported-vs-estimated-total-number-of-paralytic-polio-cases-globally/sierra-leone/syrian-arab-republic/">Sierra Leone vs Syrian Arab Republic: 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.