22,233
Participants
Start Date
October 3, 2023
Primary Completion Date
April 1, 2024
Study Completion Date
April 1, 2024
Portal-based Video Message
Video recorded by physician encouraging patients to receive influenza vaccine. Sent via the patient portal.
Portal-based Infographic Message
Infographic with information about the influenza vaccine and an image of the physician. Sent via the patient portal.
University of California, Los Angeles, Los Angeles
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
University of California, Los Angeles
OTHER