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Progress towards polio eradication, 2023

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Countries with wild poliovirus transmission are considered endemic. Countries are shown as polio-free (not certified) if they have demonstrated the absence of wild poliovirus transmission. When all countries in a World Health Organization region have recorded 0 cases for 3 consecutive years while meeting surveillance targets, the region can be certified as polio-free.

Note: The country Nauru already eradicated polio in 1910, which explains the starting date of this map. The first "larger" countries' eradication of polio can be seen after 1960.

(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 Global Polio Eradication Initiative. Creative Commons Attribution 4.0 International [CC BY 4.0] license, creativecommons.org/licenses/by/4.0.)