FRANKFURT AM MAIN, Germany (AFP) — Germany’s BioNTech and its US partner Pfizer on Friday said tests have shown that their coronavirus vaccine can stand warmer temperatures than initially thought, potentially simplifying the jab’s complex cold-chain logistics. The companies said they have asked the US Food and Drug Administration to allow for the vaccine to be stored for up to two weeks at minus 25 to minus 15 degrees Celsius (minus 13 to five […]