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Geographic distribution of progress towards polio eradication, 2020

Countries where there are any cases of paralytic polio from wild polioviruses are considered endemic. (Source: Dattani S, Spooner F, Ochmann S, Roser M. Polio. Published online at OurWorldInData.org 2017, last revised 2022. Retrieved from: https://ourworldindata.org/polio. Creative Commons Attribution 4.0 International License [CC BY 4.0], https://creativecommons.org/licenses/by/4.0.)