Overview
Currently authorized vaccines in the United States are highly effective at protecting vaccinated people against symptomatic and severe COVID-19. Additionally, a growing body of evidence suggests that fully vaccinated people are less likely to have asymptomatic infection or transmit SARS-CoV-2 to others. How long vaccine protection lasts and how much vaccines protect against emerging SARS-CoV-2 variants are still under investigation. Until more is known and vaccination coverage increases, some prevention measures will continue to be necessary in some settings for all people, regardless of vaccination status. However, the benefits of reducing social isolation and relaxing some measures such as quarantine requirements may outweigh the residual risk of fully vaccinated people becoming ill with COVID-19 or transmitting SARS-CoV-2 to others. Additionally, taking steps towards relaxing certain measures for vaccinated persons may help improve COVID-19 vaccine acceptance and upt