Global study tracks COVID immunity in health workers
NCT ID NCT05534009
First seen Nov 01, 2025 · Last updated May 15, 2026 · Updated 33 times
Summary
This study is collecting information and blood samples from 1,800 health care workers across eight countries to learn how different COVID-19 variants affect immunity from vaccines and past infections. Participants include adults who have been vaccinated or had a confirmed COVID-19 infection. The goal is to better understand how the virus escapes our immune defenses, not to test a new treatment.
Disclaimer
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This is a summary of
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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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Contacts and locations
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Azienda Socio-Sanitaria Territoriale Santi Paolo e Carlo
RECRUITINGMilan, Italy
Contact Phone: •••-•••-•••• Email: •••••@•••••
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Bach Mai Hospital
RECRUITINGHanoi, Vietnam
Contact Email: •••••@•••••
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Centro Hospitalar de Lisboa Ocidental
RECRUITINGLisbon, Portugal
Contact Phone: •••-•••-•••• Email: •••••@•••••
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Heinrich Heine university
RECRUITINGDüsseldorf, Germany
Contact Email: •••••@•••••
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Hospital Juan Ghaham Casasus
RECRUITINGVillahermosa, Mexico
Contact Phone: •••-•••-•••• Email: •••••@•••••
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Ieo Istituto Europeo Di Oncologia
RECRUITINGMilan, Italy
Contact Email: •••••@•••••
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Viesoji Istaiga Vilniaus Uiversiteto Ligoninė Santaros klinikos
RECRUITINGVilnius, Lithuania
Contact Email: •••••@•••••
Conditions
Explore the condition pages connected to this study.