It’s not injected at the storage temperature.
Long term storage requires very low temperatures. Short term storage it’s fine in a freezer. At body temperatures, the mRNA has a half life of a few hours.
So when you’re manufacturing it or shipping it long distances, you keep it super cold. When you’ve distributed it to Walgreens, they store it in a regular freezer. When they give it to you, it’s already warming up and going to body temperature. Inside your body, the lipid shell dissolves upon cell membrane encounter and the mRNA breaks down in a day or two, leaving no trace behind except an immune system that can now more effectively respond to COVID-19.
For me its not injected at any temp, not enough data. Let the CV 19 Vac advocates be the guiniea pigs for a year or so