Vaccine-Brain link under the microscope: new study seeks answers
NCT ID NCT04992195
First seen Jun 27, 2026 · Last updated Jul 31, 2026 · Updated 2 times
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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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.
Contacts and locations
Locations
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Chinese University of Hong Kong
Hong Kong, Hong Kong
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