MULLICA HILL, New Jersey (WPVI) -- Health care workers across the Delaware Valley received the first dose of the Pfizer COVID-19 vaccine on Friday. "We expect to immunize over 22,000 individuals," said Dr. Janice Nevin, the president and CEO of ChristianaCare. "In this first group we got 3,410 doses from Pfizer and our goal is to use them all up." Operating Room Nurse Rommel Carino was one of the hospitals' frontline workers receiving the vaccine. Carino says he will still continue to follow safety measures and will return for the second shot in the coming weeks. "We still have to wear our masks. We still have to do our six-foot social distancing. We still have to protect ourselves our communities," he said.