Vaccine-Brain link under the microscope: new study seeks answers
NCT ID NCT04992195
First seen Feb 25, 2026
Summary
This study aims to understand if COVID-19 vaccines have any impact on brain health in healthy people. Researchers will use MRI scans to look for changes in the brain's blood vessels and structure. The study will follow 500 adults from Hong Kong who have already had a baseline brain scan. By comparing scans before and after vaccination, the team hopes to provide clear, evidence-based information to address safety concerns.
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Chinese University of Hong Kong
RECRUITINGHong Kong, Hong Kong
Contact Phone: •••-•••-•••• Email: •••••@•••••
Contact Phone: •••-•••-•••• Email: •••••@•••••
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.