AdventHealth to vaccinate more frontline workers Frontline workers at Advent Health lined up early Wednesday morning, patiently waiting to roll up their sleeves. ORLANDO, Fla. - Frontline workers at AdventHealth lined up early Wednesday morning, patiently waiting to roll up their sleeves -- and they'll do it again on Thursday. “I didn’t even feel it. Well done,” one nurse told the person giving her the vaccine. “The frontliners, they are very thankful for this major historic moment in the history of this pandemic and I would say in the history of medicine,” said Dr. Eduardo Oliveira. He treats COVID-19 patients daily. He got his vaccine before the start of his shift.