Trinity Health Mid-Atlantic, the Catholic health system that includes Mercy Catholic Medical Center and Nazareth Hospital in Philadelphia, St. Mary Medical Center in Langhorne and St. Francis Healthcare in Wilmington, Del., recently received doses of the Pfizer-BioNTech COVID-19 vaccine and began vaccinating colleagues and physicians at its hospitals.

Officials of the system said the vaccine “is a vitally important tool in getting the pandemic under control and we are delighted to have begun offering colleagues and physicians vaccinations.” Still, they urged everyone to continue “to mask up, wear masks properly (covering nose and mouth), physically distance, wash hands and avoid crowds and close conversations.”