“Flulapalooza,” a drill of Vanderbilt University Medical Center’s mass vaccination plan, broke the Guinness world record for most vaccinations given in an eight-hour period. Free flu vaccines were given to 12,850 Vanderbilt faculty, staff, students and volunteers during the October event—more than doubling the previous record. Forty-four nurses at a time worked at individual stations in the Flulapalooza tent while volunteers maintained patient flow and logistics.