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

0 cases, with Sierra Leone ahead.

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

32 years are reported by both, from 1991 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 Turkmenistan: Reported versus estimated cases of polio

Sierra Leone

0 cases

in 2023

Turkmenistan

0 cases

in 2023

Sierra Leone rank

26th

Turkmenistan rank

26th

Reported versus estimated cases of polio over time

Sierra Leone
Turkmenistan

How they compare

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

The two have swapped places 7 times across 32 shared years of data; in 1991 it was Sierra Leone ahead.

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

Across the 4 decades both report, Sierra Leone averaged higher in 3 and Turkmenistan in 1.

Head to head by decade

Decade	Sierra Leone	Turkmenistan	Difference	Ahead
1990s	11.38 cases	4.5 cases	6.88 cases	Sierra Leone
2000s	4.5 cases	0 cases	4.5 cases	Sierra Leone
2010s	0.1 cases	0.3 cases	0.2 cases	Turkmenistan
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 Turkmenistan?: Sierra Leone, at 0 cases against 0 cases in Turkmenistan as of 2023.
What is the difference in reported versus estimated cases of polio between Sierra Leone and Turkmenistan?: 0 cases, with Sierra Leone ahead.
How many years of comparable data are there for Sierra Leone and Turkmenistan?: 32 years are reported by both, from 1991 to 2023.
How do Sierra Leone and Turkmenistan rank globally for reported versus estimated cases of polio?: Sierra Leone ranks 26th and Turkmenistan 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 Turkmenistan: Reported versus estimated cases of polio. 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/reported-vs-estimated-total-number-of-paralytic-polio-cases-globally/sierra-leone/turkmenistan/

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<a href="https://reference.statizoid.com/compare/reported-vs-estimated-total-number-of-paralytic-polio-cases-globally/sierra-leone/turkmenistan/">Sierra Leone vs Turkmenistan: 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.