We're one-third of the way to a widely available coronavirus vaccine, experts say

Avaccine to protect against the coronavirus will be many things wrapped up in a small vial: A harbinger of a return to normalcy, a scientific feat for the ages and, depending on when it arrives, a politically potent symbol.

The timeline for how long it will take to get that vaccine is a moving target and depends on whom you ask – and when.

Dr. Anthony Fauci, the top infectious-disease expert at the National Institutes of Health, has repeatedly said he hopes a vaccine could be available by the...