Pfizer, BioNTech ask FDA to approve freezer temp change for Covid-19 vaccine February 19, 2021 Auto Bot BioNTech, BioPharma, biopharma nl, Coronavirus (COVID-19), New York, Pfizer, Pharma, Vaccines 0 Pfizer and BioNTech say they have data supporting two-week storage of their vaccine at temperatures found in medical-grade freezers. They say FDA approval of an additional temperature option would give vaccination sites more flexibility.