Why COVID Vaccine Boosters Now?

The video discusses the impact of COVID-19 variants, particularly Delta, on vaccine effectiveness. It highlights the difference between vaccine efficacy and effectiveness, using Israel as a case study to show how Pfizer's effectiveness decreased over time. Research from the Mayo Clinic indicates a drop in effectiveness for Moderna and Pfizer against Delta, while Johnson & Johnson's effectiveness increased. The video also covers booster shot recommendations and the need for FDA approval.

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