Why does the Moderna and Pfizer vaccine need to be kept at sub zero temperatures?

The explanation I heard, is that it is based on mRNA, which is by its very nature extremely short lived.

It’s to keep the nano-bot technology suspended until it gets in the human body turning everyone into slaves for the Government.<pretty wild conspiracy theory huh? Problem I ran into a lady at the computer store that actually believes this.

~ ~ Extra strong doses for our neighbors North of the Border.

Because they’re unstable otherwise

Obviously, they’re unstable otherwise. I wasn’t sure if it’s the RNA or what part. The RNA isn’t from live tissue if I understand correctly. I found it interesting Moderna and Pfizer have different requirements.