COVID-19 vaccines are projected to be available to the entire American public by April 2021, HHS Secretary Alex Azar said at an Oct. 21 press briefing. That timeline is in keeping with estimates made by other public-health officials, but is among the strongest and most specific statements made about the widespread availability of a coronavirus vaccine in the U.S. … Azar said he expects to have enough doses to immunize the U.S.’ “most vulnerable individuals” by the end of 2020.