69,972
Participants
Start Date
January 17, 2024
Primary Completion Date
January 24, 2024
Study Completion Date
February 29, 2024
Reminders
Reminders
Financial Incentive
$50 financial incentive for getting vaccinated within 1-week
Placebo
No special messages or incentives
Contra Costa Health Services, Martinez
J-PAL North America
UNKNOWN
University of Southern California
OTHER