https://www.siliconvalley.com/2020/11/22/the-next-big-covid-challenge-keeping-vaccines-cold/

Some are bigger than the fridge in your kitchen. Others are as small as the cooler you lug to the beach.

They’re way colder than the Arctic, in extremely high demand and absolutely essential for getting the first wave of some coronavirus vaccines — “the proverbial light at the end of this very long, dark tunnel,” as Gov. Gavin Newsom said — from the manufacturer into the bodies of those who need protection.