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Front Cover -- Copyright Information -- Table of Contents -- Editors' Note -- Reducing the health toll from U.S. workplace stress -- Together from afar: Introducting a diary contact technique for improving intergroup relations -- Rebuilding trust between policy & -- communities through procedural justice & -- reconciliation -- How behavioral science can empower parents to improve children's educational outcomes -- Does changing defaults save lives? Effects of presumed consent organ donation policies -- Appendix -- Editorial Policy -- Back Cover.

Front Cover -- Copyright Information -- Table of Contents -- Editors' Note -- The Costs of Poor Health (Plan Choices) & Prescriptions for Reform -- Improving Voting Systems' User-Friendliness, Reliability, & Security -- Behaviorally Informed Policies for Household Financial Decisionmaking -- Behavioral Policy Interventions to Address Education Inequality -- A Behavioral Blueprint for Improving Health Care Policy -- Behavioral Science Tools to Strengthen Energy & Environmental Policy -- Overcoming Behavioral Obstacles to Escaping Poverty -- Increasing Benefits & Reducing Social Costs of Technological Innovations -- Back Cover.

Purpose To evaluate if nudges delivered by text message prior to an upcoming primary care visit can increase influenza vaccination rates. Design Randomized, controlled trial. Setting Two health systems in the Northeastern US between September 2020 and March 2021. Subjects 74,811 adults. Interventions Patients in the 19 intervention arms received 1-2 text messages in the 3 days preceding their appointment that varied in their format, interactivity, and content. Measures Influenza vaccination. Analysis Intention-to-treat. Results Participants had a mean (SD) age of 50.7 (16.2) years; 55.8% (41,771) were female, 70.6% (52,826) were White, and 19.0% (14,222) were Black. Among the interventions, 5 of 19 (26.3%) had a significantly greater vaccination rate than control. On average, the 19 interventions increased vaccination relative to control by 1.8 percentage points or 6.1% ( P = .005). The top performing text message described the vaccine to the patient as "reserved for you" and led to a 3.1 percentage point increase (95% CI, 1.3 to 4.9; P < .001) in vaccination relative to control. Three of the top five performing messages described the vaccine as "reserved for you." None of the interventions performed worse than control. Conclusions Text messages encouraging vaccination and delivered prior to an upcoming appointment significantly increased influenza vaccination rates and could be a scalable approach to increase vaccination more broadly.