FDA will let undiluted, frozen vials of Pfizer’s COVID-19 vaccine be transported and stored at higher temperatures more commonly found in pharmaceutical freezers for a period of two weeks, the agency announced Thursday (Feb. 25) . The new, flexible storage option will help ease the burden of procuring ultra-low cold storage equipment that has so far been needed to store Pfizer’s vaccine, FDA biologics center director Peter Marks said. “The alternative temperature for transportation and storage will help ease the...