ER nudges boost COVID shots? trial tests simple messages

NCT ID NCT06156215

Completed Prevention Sponsor: University of California, San Francisco Source: ClinicalTrials.gov ↗

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.

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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

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