Electronically delivered nudges increased influenza vaccination in individuals with chronic diseases, suggesting an effective strategy for public health.
Electronically delivered, letter-based nudges significantly increased influenza vaccination among 18-to-64-year-old individuals with chronic diseases compared with usual care, when delivered during a second consecutive season. The largest effect size was with a strategy where a letter focused on the potential cardiovascular benefits of influenza vaccination was sent twice. (ClinicalTrials.gov number, NCT06600490.).
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Johansen et al. (2025) studied this question.
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