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ER nudges boost COVID shots? trial tests simple messages

NCT ID NCT06156215

Prevention Sponsor: University of California, San Francisco 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 26, 2026 · Last updated Jun 26, 2026

Summary

This study tested whether brief videos, handouts, or a short talk from ER staff could increase COVID-19 booster vaccination within 30 days. Over 900 adults from emergency departments took part. The goal was to see if simple, low-cost messaging can improve vaccine uptake.

What this could mean

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

Active substance
vaccine messaging (videos, printed materials, face-to-face scripts)
What this could lead to
If effective, simple messaging in emergency rooms could help more people get COVID-19 boosters, reducing severe illness.
What could go wrong
This is a completed behavioral study, not a drug trial. Results may not apply to other settings or future vaccine updates.

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

919 people

The number who actually took part.

Started

Jan 2024

Finished

Aug 2024

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

18 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: 1. Age \> 18 years 2. Presenting to ED 3. No receipt of COVID-19 booster within prior 6 months 4. Able to provide informed consent 5. Fluent in English or Spanish 6. Anticipated ability to complete study intervention in ED i.e., able to watch a 3-minute videoclip Exclusion Criteria: 1. Major trauma such that it will preclude survey 2. Inability to participate in a survey because of intoxication, altered mental status, or critical illness 3. Incarceration 4. Psychiatric hold 5. Patients who state that they have already received a bivalent COVID-19 booster vaccine or other COVID-19 vaccine within the prior 6 months 6. Patients who are in the ED for suspected acute COVID-19

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Conditions

The condition(s) this trial relates to.

COVID-19

As listed by the trial registrant

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

COVID -19

Contacts and locations

Locations

  • Baylor College of Medicine

    Houston, Texas, 77030, United States

  • Duke University Hospital

    Durham, North Carolina, 27708, United States

  • Jefferson Methodist Hospital

    Philadelphia, Pennsylvania, 19148, United States

  • Jefferson Torresdale Hospital

    Philadelphia, Pennsylvania, 19114, United States

  • San Francisco General Hospital Emergency Department

    San Francisco, California, 94110, United States

  • Thomas Jefferson University Hospital

    Philadelphia, Pennsylvania, 19107, United States

  • University of California San Francisco Parnassus

    San Francisco, California, 94143, United States

More trials for these conditions

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