Booster before or after? study seeks best COVID protection for Immune-Weak patients
NCT ID NCT05415267
First seen Feb 28, 2026 · Last updated May 03, 2026 · Updated 3 times
Summary
This study looks at 320 adults who need strong immune-suppressing drugs and have already had at least two COVID-19 vaccines. Researchers want to know if giving a booster right before starting treatment or waiting six months provides better protection. The goal is to find the safest and most effective timing to keep these vulnerable people from getting very sick from COVID-19.
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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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Blacktown Hospital
RECRUITINGBlacktown, New South Wales, 2148, Australia
Contact Email: •••••@•••••
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Concord General Repatriation Hospital
RECRUITINGConcord, New South Wales, 2137, Australia
Contact Email: •••••@•••••
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Royal Prince Alfred Hospital
RECRUITINGCamperdown, New South Wales, 2050, Australia
Contact Email: •••••@•••••
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St Vincent's Hospital, Sydney
RECRUITINGDarlinghurst, New South Wales, 2010, Australia
Contact Email: •••••@•••••
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Westmead Hospital
RECRUITINGWestmead, New South Wales, 2145, Australia
Contact Email: •••••@•••••
Conditions
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