By Tiffany Husak, left, a nursing student at the Community College of Allegheny County, receives her first dose of the Moderna COVID-19 Vaccine, during a vaccination clinic hosted by the University of Pittsburgh and the Allegheny County Health Department at the Petersen Events Center, in Pittsburgh, Thursday, Jan. 28, 2021. (Gene J. Puskar/AP Photo) Medical providers were following instructions from the state when they gave Moderna COVID-19 vaccines earmarked for people awaiting their second doses to people in line for their first doses, according to the group representing Pennsylvania health...