Booster before or after? study seeks best COVID protection for Immune-Weakened patients
NCT ID NCT05415267
First seen Feb 28, 2026 · Last updated May 23, 2026 · Updated 5 times
Summary
This study looks at 320 adults who need strong immune-suppressing drugs and have already had at least two COVID-19 shots. Researchers want to find out if getting a booster right before starting treatment or waiting six months gives better protection. The goal is to help people with weakened immune systems stay safer from severe COVID-19.
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This is a summary of
the original study
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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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