Not Yet RecruitingNot Applicable

Effectiveness of SMS Nudging to Increase Coverage of Influenza Vaccination Among the Elderly

1,000,000 participantsStarted 2025-10

Plain-language summary

The trial will investigate to what extent SMS reminders for influenza vaccination increases coverage of influenza vaccination among elderly from the majority population, and among elderly from immigrant groups with low vaccination coverage

Who can participate

Age range65 Years

SexALL

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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Aged 65+ (age at the end of 2025, i.e., born 1960 or earlier) * Resident in Norway and have a valid ID number on 1 September 2025 * Have a registered mobile phone number Exclusion Criteria: * Have received the 2025 influenza vaccine prior to the SMS nudge dispatch date * Have emigrated or died before SMS nudge dispatch date

What they're measuring

Influenza vaccination coverage (%)

Timeframe: Three months following the intervention, during the 2025/2026 influenza season

Trial details

NCT IDNCT06486766

SponsorNorwegian Institute of Public Health

Sponsor typeOTHER_GOV

Study typeINTERVENTIONAL

Primary completion2026-01

Contact for this trial

Hansen

(+47) 21077000 folkehelseinstituttet@fhi.no

View on ClinicalTrials.gov More Influenza trials