Read MoreThe United Kingdom has become the first country to approve the Pfizer/BioNTech vaccine. Immunizations are set to start next week, with the elderly and health care workers among the first to receive it. Charlie D’Agata reports.The United Kingdom has become the first country to approve the Pfizer/BioNTech vaccine. Immunizations are set to start next week, with the elderly and health care workers among the first to receive it. Charlie D’Agata reports.