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COVID-19: ‘Ring vaccination’ can teach us how to target limited supply

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globalnews.ca

daily case counts in Canada rise to record highs despite several provinces imposing new restrictions, and some experts are pointing to ring vaccination — a strategy deployed in the eradication of smallpox — as a template for how to focus limited vaccine supply to have the greatest impact.While experts say COVID-19 and its spread pose unique challenges in deploying ring vaccination by the book, the principles behind it can guide vaccine prioritization by creating a “ring” of vaccinated protection around hot-spot regions or even specific workplaces.In its simplest terms, ring vaccination involves identifying and vaccinating the “ring” of individuals in contact with an infected individual in order to protect them and to suppress further.

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