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Nationwide Utilization of Danish Government Electronic Letter System for Increasing InFLUenza Vaccine Uptake

NCT05542004

CompletedNA

Sponsor: Tor Biering-Sørensen

Conditions: Influenza, Behavior and Behavior Mechanisms

Interventions: Behavioral Economic Principles

Countries: Denmark

In randomized clinical trials and observational studies, influenza vaccination has been shown to be effective in reducing influenza-related illness, hospitalizations, cardiovascular events, and mortality in select populations. However, the real-world effectiveness of influenza vaccination is limited by its uptake. This study will investigate investigate whether digital behavioral nudges delivered via the official, mandatory Danish electronic letter system can increase influenza vaccine uptake among eligible influenza vaccination candidates.

Eligibility overview

Sex: ALL

Age: 65 Years to —

Healthy volunteers: Yes

Study type: INTERVENTIONAL

Eligibility criteria

Inclusion Criteria:

1. Age \>=65 years at January 15, 2023 (eligible for free influenza vaccination in the official Danish vaccination program)
2. Access to the official, mandatory Danish electronic mailbox system

Exclusion Criteria:

1\) Persons living in nursing homes

Locations (1)

Hellerup, Capital Region, Denmark