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. 2021 Aug 27;70(34):1129–1135. doi: 10.15585/mmwr.mm7034a1

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All material in the MMWR Series is in the public domain and may be used and reprinted without permission; citation as to source, however, is appreciated.

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The figure is a bar chart showing the number of wild poliovirus type 1 cases that occurred worldwide during January 2019–June 2021, by country and month of paralysis onset. — Number of wild poliovirus type 1 cases, by country and month of paralysis onset — worldwide, January 2019—June 2021*

Abbreviation: WPV1 = wild poliovirus type 1.

* Data are current as of August 3, 2021.