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A simple nudge could boost shingles shots

NCT ID NCT06238726

Prevention Sponsor: Geisinger Clinic Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Aug 14, 2026 · Last updated Aug 14, 2026

Summary

This trial tests whether sending reminder messages to older adults before a doctor's appointment can increase the number who get the shingles vaccine. The study will compare different message styles to see which is most effective. Participants are adults aged 50 and older who have not yet received the Shingrix vaccine and have an upcoming primary care appointment.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Behavioral intervention: reminder messages (via SMS, patient portal, email, or other) encouraging patients to ask about the Shingrix vaccine
What this could lead to
If effective, simple reminder messages could significantly increase shingles vaccination rates among older adults, reducing the burden of this painful condition.
What could go wrong
The trial is early and tests different message versions; not all may work. Also, reminders alone may not overcome other barriers to vaccination.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

50,786 people

The number who actually took part.

Started

Mar 2024

Finished

Jun 2025

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

50 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Age 50+ * Has not received any doses of the Shingrix vaccine according to the Geisinger EHR * Has a non-acute in-person Geisinger primary care appointment in a department that stocks Shingrix scheduled with enough time to be randomized Exclusion Criteria: * Cannot be contacted via the communication modality being used in the study (e.g., patient portal, SMS), e.g., due to insufficient/missing contact information in the EHR or because they opted out * Patient does not have an approved insurance on file for Shingrix outreach for their appointment type or department * Appointment type or department not approved for outreach by Geisinger leadership at the time of outreach * While a separate flu vaccination nudge campaign is running (approximately from September through December, 2024), patients will be excluded if they have not received a flu shot in the 2024-25 flu season according to the EHR. Such patients will be eligible for inclusion again as soon as the flu vaccination campaign ends.

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Conditions

The condition(s) this trial relates to.

Health Behavior herpes zoster prevention target

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Behavior, health Shingles Vaccination behavior

Contacts and locations

Locations

  • Geisinger Clinic

    Danville, Pennsylvania, 17822, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.