Explainer: When will COVID-19 vaccines be generally available in the U.S.?

Trump has said one could initially be available by the Nov. 3 election, while the CDC director said vaccines were likely to reach the general public around mid-2021, an assessment more in line withmost experts.There are currently no COVID-19 vaccines approved by U.S. regulators, although a handful are in late-stage trials to prove they are safe and effective.HOW LONG BEFORE VACCINE PRODUCTION IS FULLY RAMPED UP?