ChartOur World in Data

Reported versus estimated cases of polio

Reported cases of polio may be an underestimate of actual cases because people with acute flaccid paralysis may not be detected and tested for the poliovirus in time.

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Our World in Data
Updated
08 Apr 2024
Last checked
17 Sept 2026
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Data visualization: Reported versus estimated cases of polio

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World Health Organization and Our World in Data adapted from Tebbens et al. (2010)

Attribution: WHO

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