Penn State has officially started rolling out doses of the coronavirus vaccine to select health care professionals working on campus in Centre County, the university announced Tuesday.

The university, alongside Penn State Health, identified 50 Penn State employees as part of the “critical workforce,” according to the Pennsylvania Department of Health’s first phase of vaccine distribution plans and guidelines.

Limited vaccine availability required Penn State to limit distribution to that group, which includes frontline health care workers, caregivers at University Health Services, those providing care for coronavirus-positive individuals, and full-time testing site employees.

The university did not specify which vaccine employees received. The Food and Drug Administration has authorized both the Pfizer-BioNTech and Moderna vaccines for emergency use.

Penn State said it’s working alongside health care providers to secure vaccine doses for other Penn State locations across the state. Those outside Centre County should receive information on local vaccine availability once it becomes available.

Last month, Mount Nittany Medical Center, located in State College, received ample doses of the vaccine to provide to frontline workers and employees. Two weeks later, the hospital expanded vaccinations to even more local health care workers.