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. 2022 Apr 13;226(8):1309–1318. doi: 10.1093/infdis/jiac130

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© The Author(s) 2022. Published by Oxford University Press on behalf of Infectious Diseases Society of America.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 3. — Estimated total annual paralytic polio cases since 1950 with GPEI (solid black curve) and without poliovirus vaccines (dotted red curve). For reference, blue bars show reported cases of paralytic polio through 29 December 2021 [12, 13]. The inset shows the period 2000 to 2021 with a magnified vertical axis to make visible the reported and modeled cases of paralytic polio in the past 2 decades. Abbreviations: GPEI, Global Polio Eradication Initiative; RC, reference case; WHO, World Health Organization.