Lori Rolando, assistant professor of clinical medicine, shares the latest guidance on when to get the flu shot and the COVID-19 booster shot. Both can be received simultaneously or with no wait time between the vaccines. If the booster shot is not yet recommended for your demographic, it is important to get the flu shot before the end of October and the booster when it becomes available or recommended. Rolando is director of the Occupational Health Clinic at Vanderbilt University Medical Center.