How many years of comparable data are there for Algeria 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 Paralytic polio: estimated cases by world region. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Algeria vs Sierra Leone: Paralytic polio: estimated cases by world region

Algeria

0 cases

in 2023

Sierra Leone

0 cases

in 2023

Algeria rank

26th

Sierra Leone rank

26th

Paralytic polio: estimated cases by world region over time

Algeria
Sierra Leone

How they compare

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

The two have swapped places 7 times across 43 shared years of data; in 1980 it was Algeria ahead.

Algeria ranks 26th and Sierra Leone ranks 26th of 199 countries.

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

Head to head by decade

Decade	Algeria	Sierra Leone	Difference	Ahead
1980s	488.6 cases	275.1 cases	213.5 cases	Algeria
1990s	17.11 cases	100.33 cases	83.22 cases	Sierra Leone
2000s	0.2 cases	25.02 cases	24.82 cases	Sierra Leone
2010s	0 cases	0.111 cases	0.111 cases	Sierra Leone
2020s	0.8325 cases	7.5 cases	6.67 cases	Sierra Leone

Averages of every year both report within each decade.

Frequently asked questions

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

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Algeria vs Sierra Leone: Paralytic polio: estimated cases by world region. 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/number-of-estimated-paralytic-polio-cases-by-world-region/algeria/sierra-leone/

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<a href="https://reference.statizoid.com/compare/number-of-estimated-paralytic-polio-cases-by-world-region/algeria/sierra-leone/">Algeria vs Sierra Leone: Paralytic polio: estimated cases by world region</a> — Statizoid

About this data

Indicator: Paralytic polio: estimated cases 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

Total estimated number of polio cases.