New research has shed light on a crucial biological mechanism that may have helped the coronavirus to infect humans and spread rapidly around the world.
https://www.theguardian.com/world/2020/mar/30/new-study-sheds-light-on-coronavirus-infection-mechanism
https://www.theguardian.com/world/ng-interactive/2020/mar/29/coronavirus-map-of-the-us-latest-cases-state-by-state