COVID vaccine booster in pregnancy: does it protect baby too?
NCT ID NCT05543993
First seen Dec 18, 2025
Summary
This completed study followed 150 pregnant or breastfeeding women who received a bivalent COVID-19 booster. Researchers measured antibody levels in mothers, infants, and breast milk to understand how vaccination impacts immunity against COVID-19 variants. The goal was to learn more about protection for both mother and child.
Disclaimer
Read more
Show less
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.
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.
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for COVID-19 are added.
Genom att skicka in godkänner du våra Användarvillkor
Contacts and locations
Show contact details
Enter your email to view the contact information for this study.
Genom att skicka in godkänner du våra Användarvillkor
Locations
-
Thomas Jefferson University Hospital
Philadelphia, Pennsylvania, 19107, United States
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
Bivalent COVID-19 Booster (Pfizer or Moderna)
What this could lead to
If successful, this study could help clarify how well COVID-19 vaccines protect both mothers and their babies.
What could go wrong
This is an observational study, not a treatment trial. Results may not apply to all populations or newer virus variants.
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.