"Traditional vaccines are usually stored between 35 degrees Fahrenheit and 46 degrees Fahrenheit, but some of the leading COVID-19 vaccines need to be stored at much colder temperatures. Moderna’s vaccine requires a storage temperature of
minus 4 degrees Fahrenheit, whereas Pfizer’s vaccine candidate requires a storage temperature of
minus 94 degrees Fahrenheit."
I know the huge amount of waste and errors involved in transporting/storing human blood at +2°C to +8°C.
Eventually it will be more stable and reliable. It will.
Eventually.