The US has a massive amount of standing capacity to produce vaccines. All they need is a license to produce it.
Given the threat posed by the Corona virus this is exactly what must happen.
Given the threat posed by the Corona virus this is exactly what must happen.
So, no not even a license is required.
The US have a massive army of chickens ready to produce eggs which are used to produce vaccines in the order of millions per month. They just need the vaccine and they can produce it.
I hope that Europe are in the same situation.