Can I book earlier vaccine appointments if I already made one? FacebookTwitterEmail 1of3 Community Health Center Inc. opened the state's first and largest large-scale outdoor COVID-19 vaccination clinic Jan. 17 on a runway at the long retired Pratt & Whitney airport at Rentschler Field in East Hartford.Dan Haar / Hearst Connecticut MediaShow MoreShow Less 2of3 Stickers for the clergy to wear after they receive the vaccine sit on a table at Hartford HealthCare St. Vincent’s Medical Center in Bridgeport on Feb. 26, 2021.JOSEPH PREZIOSO / AFP via Getty ImagesShow MoreShow Less 3of3 to get it delivered to your inbox. A quirk of Connecticut’s decentralized vaccination appointment system means that one patient could make many appointments with different providers, a scenario that has state officials hopeful that people will cancel appointments once they've been vaccinated.