CDC director defends unusual decision on Pfizer’s Covid boosters: ‘This was a scientific close call’

• CDC Director Dr. Rochelle Walensky broke from the agency's advisory panel and authorized vaccines for those in high-risk transmission environments.
• Walensky adopted the panel's other recommendations to distribute third shots to adults with underlying medical conditions and everyone 65 and older.
• President Joe Biden said the CDC's recommendation expanded boosters to approximately 60 million Americans, including educators, health-care personnel and supermarket employees.

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