Moderna's vaccine may have an edge when immunization programs roll out

Stringent storage and distribution could limit use of Pfizer and BioNTech's coronavirus vaccine candidate more than a rival shot from Moderna if both are authorized for wide use in humans, according to data reviewed by a federal immunization panel. The Pfizer/BioNTech vaccine must be transported and stored at much lower temperatures and, once thawed, only remains stable for 24 hours in a refrigerator.