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Reported cases of paralytic polio from wild polioviruses

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This includes reported cases of paralytic polio from any wild poliovirus strain (WPV1, WPV2, WPV3).

Note: The last case of WPV2 was reported in 1999, whereas the last case of WPV3 was reported in 2012. Cases shown since 2013 were all caused by WPV1.

(Source: Dattani S, Spooner F, Ochmann S, Roser M. Polio. First published in November 2017, and last updated in May 2024. Available at: ourworldindata.org/polio. Accessed May 2024. Based on data from the World Health Organization. Creative Commons Attribution 4.0 International [CC BY 4.0] license, creativecommons.org/licenses/by/4.0.)