Israel was a world leader in rolling out vaccinations for COVID-19 but since the Delta variant is causing a surge in cases they are now offering a third shot or booster of the Pfizer-BioNTech COVID-19 vaccines to those over sixty. Israeli research shows immunity can decline over time and the booster aims to build that immunity back up. FOX’s Simon Owen speaks to Dr. Marc Siegel, FOX News Medical Contributor, about the decision to offer a booster and if the United States is heading in the same direction.

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