663 - Capitalizing on Trust: A 3-Arm RCT to Evaluate the Impact of Patient Portal-Based Video Messages or Infographics to Raise Pediatric Influenza Vaccination Rates

Emma J. Clark, University of California, Los Angeles David Geffen School of Medicine, Venice, CA, United States; Sitaram Vangala, University of California, Los Angeles David Geffen School of Medicine, Los Angeles, CA, United States; Christina S.. Albertin, University of Rochester School of Medicine and Dentistry, Indianapolis, IN, United States; Carlos Lerner, UCLA Mattel Childrens Hospital, Los Angeles, CA, United States; O. Kenrik K. Duru, UCLA, Los Angeles, CA, United States; Michael K. Ong, University of California, Los Angeles David Geffen School of Medicine, Los Angeles, CA, United States; Alejandra Casillas, UCLA, Los Angeles, CA, United States; Sharon Humiston, Immunize.org, Pittsford, NY, United States; Chi-Hong Tseng, University of California, Los Angeles David Geffen School of Medicine, Los Angeles, CA, United States; Mindy Ross, University of California, Los Angeles David Geffen School of Medicine, Los Angeles, CA, CA, United States; Sharon Evans, UCLA, Los Angeles, CA, United States; Michael J. Sloyan, UCLA Health, Los Angeles, CA, United States; Arjun Kumar, University of California, Los Angeles David Geffen School of Medicine, Seattle, WA, United States; Ilona T. Chakarian, University of California, Los Angeles David Geffen School of Medicine, Sierra Madre, CA, United States; Peter Szilagyi, UCLA, Los Angeles, California, CA, United States