Gaining a vaccine to help contain the novel coronavirus would provide a big boost to the global economy in 2021, but the initial geographic distribution of that benefit will likely depend on which vaccine candidate works first.
Public health officials around the world increasingly believe at least one of the vaccines now in the later stages of testing will become usable. They say it’s possible one or more will be available for a small number of vulnerable people by the end of this year, spreading out to more of the population…