The immediate impact of the COVID-19 pandemic on polio immunization and surveillance activities.

Vaccine · 2023 · PMC8531002 · PMID 34756614

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a positive trendno p-value reported

For the key regions of AFR and EMR, September 2020 was the beginning of a positive trend towards pre-pandemic levels for both AFP reporting and ES stool shipments [11] . 3.3.

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