Headache & Pain
Headache guidelines
Apr. 06, 2021
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US Number: +1-619-640-4660
Support: service@medlink.com
Editor: editor@medlink.com
ISSN: 2831-9125
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Countries are considered endemic if they have indigenous cases of polio from wild polioviruses.
Note: The following countries eradicated polio before 1960 but are hard to see on the map: Nauru (1910), Tuvalu (1936), Palau (1940), American Samoa, Niue and Tokelau (1950), Cayman Islands (1958), and Andorra and Cook Islands (1959).
(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.)