“It would be a moral tragedy if young, healthy company employees who are at low risk for the disease are immunized before our doctors, nurses, and other frontliners, and before our senior citizens who are at higher risk for illness,” the bishops said, adding, “Each individual person should be left free to decide to choose to be vaccinated or not according to his or her conscience with full awareness of the obligation to protect oneself from being an instrument of contagion and the farther spread of the virus.”