Pfizer BioNtech COVID-19 vaccine
A pharmacist administers a dose of the Pfizer BioNtech COVID-19 vaccine at a mass vaccination site at Fenway Park in Boston, Massachusetts. Image Credit: Bloomberg

Washington: Frozen vials of Pfizer’s COVID-19 vaccine may be stored at temperatures commonly found in pharmaceutical freezers for a period of up to two weeks, the US Food and Drug Administration said Thursday.

The move loosens a previous requirement that the vaccine be stored at ultra-low temperatures, between -112 degrees Fahrenheit and -76 degrees Fahrenheit (-80 degrees Celsius and -60 degrees Celsius).