Even as coronavirus deaths continue to mount across Europe, New York and other hot spots, the U.S. and other governments are slowly beginning to envision an exit strategy and contemplating a staggered and carefully calibrated relaxation of the restrictions designed to curb the scourge.

“To end the confinement, we’re not going to go from black to white; we’re going to go from black to gray,” top French epidemiologist Jean-François Delfraissy said in a radio interview.