How many years of comparable data are there for Sri Lanka and United States of America?

44 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.

Sri Lanka vs United States of America: Reported versus estimated cases of polio

Sri Lanka

0 cases

in 2023

United States of America

0 cases

in 2023

Sri Lanka rank

26th

United States of America rank

26th

Reported versus estimated cases of polio over time

Sri Lanka
United States of America

How they compare

Sri Lanka currently reports 0 cases against 0 cases in United States of America, a difference of 0 cases.

The two have swapped places 3 times across 44 shared years of data; in 1980 it was Sri Lanka ahead.

Sri Lanka ranks 26th and United States of America ranks 26th of 199 countries.

Across the 5 decades both report, Sri Lanka averaged higher in 2 and United States of America in 1.

Head to head by decade

Decade	Sri Lanka	United States of America	Difference	Ahead
1980s	81.1 cases	6.1 cases	75 cases	Sri Lanka
1990s	3.7 cases	0 cases	3.7 cases	Sri Lanka
2000s	0 cases	0 cases	0 cases	—
2010s	0 cases	0 cases	0 cases	—
2020s	0 cases	0.25 cases	0.25 cases	United States of America

Averages of every year both report within each decade.

Frequently asked questions

Which has higher reported versus estimated cases of polio, Sri Lanka or United States of America?: Sri Lanka, at 0 cases against 0 cases in United States of America as of 2023.
What is the difference in reported versus estimated cases of polio between Sri Lanka and United States of America?: 0 cases, with Sri Lanka ahead.
How many years of comparable data are there for Sri Lanka and United States of America?: 44 years are reported by both, from 1980 to 2023.
How do Sri Lanka and United States of America rank globally for reported versus estimated cases of polio?: Sri Lanka ranks 26th and United States of America 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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Sri Lanka vs United States of America: Reported versus estimated cases of polio. Statizoid, drawing on World Health Organization (2019); World Health Organization (2024) – processed by Our World in Data. Retrieved 06 September 2026, from https://reference.statizoid.com/compare/reported-vs-estimated-total-number-of-paralytic-polio-cases-globally/sri-lanka/united-states/

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<a href="https://reference.statizoid.com/compare/reported-vs-estimated-total-number-of-paralytic-polio-cases-globally/sri-lanka/united-states/">Sri Lanka vs United States of America: 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.