228,831
Participants
Start Date
September 22, 2022
Primary Completion Date
March 31, 2023
Study Completion Date
June 1, 2023
Text messaging
Patients will receive up to 3 text messages reminding them about the importance of influenza vaccination during the 2022-2023 flu season.
Los Angeles County Department of Health Services, Los Angeles
National Institute on Aging (NIA)
NIH
University of California, Los Angeles
OTHER
Los Angeles County Department of Public Health
OTHER_GOV
University of Southern California
OTHER