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AI chatbot takes on vaccine myths in european trial

NCT ID NCT07551986

Knowledge-focused Sponsor: London School of Hygiene and Tropical Medicine Source: ClinicalTrials.gov ↗

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
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
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 Results may not be published yet.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)

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Expanded access (paused)
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Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
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When the status isn't known

Details not published
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Status unknown
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First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests a new AI chatbot designed to help parents recognize and resist false information about childhood vaccines. About 5,000 parents from five European countries will use the chatbot or read standard health materials, then take a quiz to see how well they can tell true from false vaccine facts. The goal is to find out if the chatbot is better than usual methods at building resilience to vaccine misinformation.

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

About 5,000 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Apr 2026

An estimate. Start dates often move.

Expected to finish

Apr 2026

An estimate. End dates often move.

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

20 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: * Parents or caregivers with children under 18 years old in the five target countries (UK, Netherlands, Croatia, Latvia, and Slovakia); and * Those who have regular access to a digital device and the internet Exclusion Criteria: * Participants who do not meet the inclusion criteria.

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As listed by the trial registrant

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Healthy

How to take part

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  1. The official record

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  2. A doctor treating you

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