Early Coronavirus Vaccine Supplies Likely Won’t Be Enough for Everyone at High Risk

Initial supplies of any successful coronavirus vaccines are now expected to fall short of what is needed even for high-priority groups like health-care workers, forcing drugmakers and U.S. officials to grapple with the thorny question of who should be first in line.

Public-health officials estimate more than 100 million Americans, including doctors and nurses, other essential workers and nursing-home residents, should get vaccinated before the general public because they are at...