An Experimental Coronavirus Vaccine Is Already Being Tested on People

But it still won’t be widely available for at least a year

Scientist Xinhua Yan works in the lab at Moderna in Cambridge, MA on Feb. 28, 2020. Photo: David L. Ryan/The Boston Globe/Getty Images)

SScientists are urgently pursuing vaccines that could protect large numbers of people against the deadly coronavirus. To do this as quickly as possible, one company is skipping early testing steps and fast-tracking a type of vaccine technology that…