UpdatedWed, Jan 6, 2021 at 11:05 am ET Replies(3) Chester County Health Department Director Jeanne Casner was on site for the first day of vaccines going to healthcare workers not affiliated with hospitals. (Marlene Lang) Gretchen Spino, RN, gives a COVID-19 vaccine to school nurse Margaret Rizzo, RN at the Chester County Government Services Center today. (Marlene Lang) EMS worker Brittany Ward was among the first to be vaccinated in Chester County's Day 1 rollout of 2,000 doses of the COVID-19 vaccine. (Marlene Lang) WEST CHESTER, PA — The Chester County Health Department today began vaccinating EMS providers and frontline healthcare personnel with the first shipment of 2,000 doses of the Moderna COVID-19 vaccine.