UnknownNot 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 range

65 Years

Sex

ALL

See this in plain English?

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

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

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

Who can participate

Age range

65 Years

Sex

ALL

See this in plain English?

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