As Moderna's COVID-19 heads toward FDA approval, health professionals find more doses in Pfizer's vials

Food and Drug Administration advisers are holding a key meeting Thursday to consider approving Moderna's coronavirus vaccine candidate for emergency use. CBS News correspondent David Begnaud and internal medicine physician Dr. Shoshana Ungerleider join CBSN with the latest on the United States' dire fight against the deadly disease, including extra doses in Pfizer's vaccine vials as well as concerns about rare allergic reactions.