U.K. adds to real-world data backing flexible COVID vaccine schedule

Public Health England has bolstered the U.K.’s case for flexible vaccine dose schedules with its analysis of real-world data from healthcare workers and elderly people immunized with Pfizer and BioNTech’s Comirnaty.

The U.K. is one of several countries that allow flexible schedules for authorized vaccines. The U.S. does not and is sticking to the dosing schedule in the Phase III trial...