It isn't just the refrigeration that's an issue.
The federal government has abandoned responsibility for the distribution of the vaccine. Now it's up to the underfunded state health departments to handle it without federal aid, and the states are low on funds to pay for it, even the very sucky states like Tennessee, South Carolina, etc., that suck up all that federal money year after year.
And in October HHS Secretary Azar predicted the vaccine would be here now, so it is no surprise.
We were supposed to have 20 million doses administered by the end of the year, but it looks like it will only be 2 million in actuality. Additional Americans will die.
Maybe making a failed businessman (and a successful reality show host) the president wasn't such a great idea.