MedPage Today March 10, 2025
— Yes, study suggests, but results may not represent a meaningful impact, expert says
Key Takeaways
- Receiving an electronic reminder about influenza vaccination appeared to decrease COVID vaccination rates.
- The effect was modest but statistically significant.
- Further study of the possibility of unintended consequences of wide-scale public health messaging is needed.
Electronic letters encouraging influenza vaccination may have had the unintended consequence of decreasing COVID-19 vaccination rates, according to a prespecified secondary analysis of the Danish NUDGE-FLU trial.
Among nearly 700,000 adults ages 65 and older, the receipt of nine different intervention letters focused on increasing influenza vaccination uptake reduced the likelihood of receiving a COVID vaccine compared with usual care (86.16% vs 86.52%;...
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