Clinical trial Recruiting at 1 site Interventional Ages 50 and up

Do personal story and informational videos encourage older adults to get vaccinated?

Official title: Can Stories Encourage the Elderly to Vaccinate? Combining Viewer-tailored Personal Narrative Videos With Informational Videos to Improve Vaccine Uptake Among Older Adults

Run by Johns Hopkins Bloomberg School of Public Health · NCT06890403 · Data updated 2026-11-12

This project will try informational videos, personal story videos, and a mix of both to see which best increases vaccination among U.S. adults aged 50 and older.

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Quick facts

Study typeInterventional
Ages50 Years and up
SexAll
Enrollment6000 (estimated)
SponsorJohns Hopkins Bloomberg School of Public Health
Academic / other
Locations1 site (New York, New York)
StatusRecruiting
StartedSeptember 16, 2025
Main results expectedSeptember 24, 2026
Study endsJanuary 2027
Registry record updatedFebruary 13, 2026
Trial IDNCT06890403 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

U.S. adults aged 50 and older who can view and listen to videos on their device and complete brief surveys are ideal candidates for this project.

Probably not a fit

People who cannot or will not view videos on their device, who fail to complete required surveys, or who are already firmly unwilling to be vaccinated are unlikely to benefit from participation.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Participants aged 50 and older in the United States will be shown one of three video formats: an informational animation, a personal narrative, or a combination of both, and their subsequent vaccination behavior will be tracked. The intervention is delivered via participants' own devices and requires completion of pre- and post-viewing surveys. Recruitment and data collection are conducted in partnership with Ipsos, with Johns Hopkins Bloomberg School of Public Health as the lead sponsor and Merck collaborating. The trial compares the relative effectiveness of narrative versus informational messaging on vaccine uptake in an older adult population.

Why it matters

Potential benefit: If successful, the findings could identify simple, scalable video messaging that increases vaccination rates among older adults.

How similar studies have gone: Prior communication research shows mixed but promising results for personal narratives improving vaccine attitudes, though evidence on actual uptake among older adults is limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* U.S. adults aged 50 and older

Exclusion Criteria:

* Participants who do not complete the survey
* Participants who are unable or refuse to view and listen to videos on the participant's device

Where it's running

  • Ipsos
    New York, New York, United States
    Recruiting

Study contacts

  • Principal investigator: Daniel Salmon, PhD — Johns Hopkins University
  • Study coordinator: Michelle Goryn
  • Email: mgoryn1@jh.edu
  • Phone: 919-357-2484

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.