Marcus Johnson Maret 4, 2025 AND JULIE, CANCER PREVENTION, CLINICAL TRIALS, COVID-19, DISEASE PREVENTION, HANNA, HPV VACCINE, INDIANA, INDIANA UNIVERSITY MELVIN AND BREN SIMON COMPREHENSIVE CANCER CENTER, INDIANAPOLIS, IU HEALTH, MEDICINE, NASSER HANNA, NORTH AMERICA, TOM, U. S, UNITED STATES