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Time distribution of confirmed cVDPV2 cases and implemented vaccination campaigns, Northern and Southern Yemen, 2021 to 2022

Abbreviation: cVDPV2, circulating vaccine-derived poliovirus type 2. (Source: Al-Qassimi MA, Al Amad M, Al-Dar A, Al Sakaf E, Al Hadad A, Raja'a YA. Circulating vaccine-derived poliovirus type 2 outbreak and response in Yemen, 2021-2022, a retrospective descriptive analysis. BMC Infect Dis 2024;24[1]:321. Creative Commons Attribution 4.0 International [CC BY 4.0] license, creativecommons.org/licenses/by/4.0.)

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