Good Morning America
Good Morning America
@gma·5.5M subscribers·52.4K videos

COVID-19 vaccine: booster or additional dose?

Posted

October 6, 2021

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A booster vaccine restores vaccine effectiveness, and an additional dose optimizes and enhances immune response. Ultimately, the goal is protection against hospitalization, severe disease and death.

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COVID-19 vaccine: booster or additional dose? · Good Morning America · Sentinel