Dr. Elizabeth Connick, UArizona Chief of Infectious Diseases and BIO5 member discusses the possible need for booster shots for COVID-19 vaccines, like the one from Moderna. Meantime, Dr. Connick and the UArizona College of Medicine are beginning a separate study of the Moderna vaccine. The goal of PreventCOVID is to recruit 12,000 students, at 20 universities nationwide, including UArizona. They are trying to determine if masking and social distancing are still needed for those who have been vaccinated. It will closely look at how effective the vaccine is at preventing asymptomatic infection, as we need the answers to these questions in order to guide our public policy.