DETROIT – The Food and Drug Administration could issue an emergency use authorization for the Pfizer COVID-19 vaccine as early as this Thursday. Even after the first vaccine is given the green light there will still be a considerable follow-up to monitor safety. Part of that includes a new tool called V-SAFE, it’s a smartphone-based active surveillance program for COVID-19. It’s a way for the Centers for Disease Control and Prevention to monitor vaccine recipients for any health problems through text messages and online surveys in the first week after a person receives the vaccine and then weekly thereafter for six weeks. READ: Michigan health officials to work with community leaders to address vaccine concernsContinuous COVID-19 coverageQuestions about coronavirus?