Oxford, AstraZeneca join Pfizer and Moderna as vaccine candidates that may soon be rushed out for distribution.
Recent testing shows the vaccine developed at England's Oxford University works well and is safe.
That makes three vaccines now in the final stages.
With Pfizer and Moderna at 95 percent efficacy, let's give you some sharper insight into what that means.
We'll do that with the expertise of our country's top infectious disease expert, Dr. Anthony Fauci. He held a conversation about this topic with The Hastings Center.
