To properly shield its teams and league personnel, the NBA would have to establish extensive precautions to ensure the health and safety of those inside the bubble. It’s not enough to think about the 450-or-so NBA players and the surrounding staffs of all 30 teams. According to Dr. Caroline Buckee, an associate professor of Epidemiology at Harvard’s T.H. Chan School of Public Health, the NBA is just one piece of a very complicated puzzle.