How many years of comparable data are there for Sao Tome and Principe and Zambia?

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.

Sao Tome and Principe vs Zambia: Paralytic polio: estimated cases by world region

Sao Tome and Principe

0 cases

in 2023

Zambia

1.11 cases

in 2023

Sao Tome and Principe rank

26th

Zambia rank

23rd

Paralytic polio: estimated cases by world region over time

Sao Tome and Principe
Zambia

How they compare

Zambia currently reports 1.11 cases against 0 cases in Sao Tome and Principe, a difference of 1.11 cases.

Across all 43 years both countries report, Zambia has been ahead every year.

Sao Tome and Principe ranks 26th and Zambia ranks 23rd of 199 countries.

Zambia has averaged higher in every one of the 5 decades both report.

Head to head by decade

Decade	Sao Tome and Principe	Zambia	Difference	Ahead
1980s	21 cases	1,239 cases	1,218 cases	Zambia
1990s	0 cases	399.78 cases	399.78 cases	Zambia
2000s	0 cases	1 cases	1 cases	Zambia
2010s	0 cases	0.222 cases	0.222 cases	Zambia
2020s	0 cases	0.2775 cases	0.2775 cases	Zambia

Averages of every year both report within each decade.

Frequently asked questions

Which has higher paralytic polio: estimated cases by world region, Sao Tome and Principe or Zambia?: Zambia, at 1.11 cases against 0 cases in Sao Tome and Principe as of 2023.
What is the difference in paralytic polio: estimated cases by world region between Sao Tome and Principe and Zambia?: 1.11 cases, with Zambia ahead.
How many years of comparable data are there for Sao Tome and Principe and Zambia?: 43 years are reported by both, from 1980 to 2023.
How do Sao Tome and Principe and Zambia rank globally for paralytic polio: estimated cases by world region?: Sao Tome and Principe ranks 26th and Zambia ranks 23rd 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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Sao Tome and Principe vs Zambia: 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 12 September 2026, from https://reference.statizoid.com/compare/number-of-estimated-paralytic-polio-cases-by-world-region/sao-tome-and-principe/zambia/

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<a href="https://reference.statizoid.com/compare/number-of-estimated-paralytic-polio-cases-by-world-region/sao-tome-and-principe/zambia/">Sao Tome and Principe vs Zambia: 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.