What is the difference in reported cases of paralytic polio by world region between Sierra Leone and Sri Lanka?

0 cases, with Sierra Leone ahead.

How many years of comparable data are there for Sierra Leone and Sri Lanka?

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 cases of paralytic polio by world region. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Sierra Leone vs Sri Lanka: Reported cases of paralytic polio by world region

Sierra Leone

0 cases

in 2023

Sri Lanka

0 cases

in 2023

Sierra Leone rank

26th

Sri Lanka rank

26th

Reported cases of paralytic polio by world region over time

Sierra Leone
Sri Lanka

How they compare

Sierra Leone currently reports 0 cases against 0 cases in Sri Lanka, a difference of 0 cases.

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

Sierra Leone ranks 26th and Sri Lanka ranks 26th of 199 countries.

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

Head to head by decade

Decade	Sierra Leone	Sri Lanka	Difference	Ahead
1980s	39.3 cases	81.1 cases	41.8 cases	Sri Lanka
1990s	14.33 cases	4.11 cases	10.22 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 cases	3.75 cases	Sierra Leone

Averages of every year both report within each decade.

Frequently asked questions

Which has higher reported cases of paralytic polio by world region, Sierra Leone or Sri Lanka?: Sierra Leone, at 0 cases against 0 cases in Sri Lanka as of 2023.
What is the difference in reported cases of paralytic polio by world region between Sierra Leone and Sri Lanka?: 0 cases, with Sierra Leone ahead.
How many years of comparable data are there for Sierra Leone and Sri Lanka?: 43 years are reported by both, from 1980 to 2023.
How do Sierra Leone and Sri Lanka rank globally for reported cases of paralytic polio by world region?: Sierra Leone ranks 26th and Sri Lanka 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 cases of paralytic polio by world region. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Sierra Leone vs Sri Lanka: Reported cases of paralytic polio by world region. Statizoid, drawing on World Health Organization (2019); World Health Organization (2024) – processed by Our World in Data. Retrieved 05 September 2026, from https://reference.statizoid.com/compare/the-number-of-reported-paralytic-polio-cases-by-world-region/sierra-leone/sri-lanka/

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<a href="https://reference.statizoid.com/compare/the-number-of-reported-paralytic-polio-cases-by-world-region/sierra-leone/sri-lanka/">Sierra Leone vs Sri Lanka: Reported cases of paralytic polio by world region</a> — Statizoid

About this data

Indicator: Reported cases of paralytic polio by world region
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.