19 May 2021 - Based on a review of recent data submitted by Pfizer today, the U.S. FDA is authorising undiluted, thawed Pfizer-BioNTech COVID-19 vaccine vials to be stored in the refrigerator at 2°C to 8°C (35°F to 46°F) for up to 1 month.
Previously, thawed, undiluted vaccine vials could be stored in the refrigerator for up to 5 days.