Swab trick may give C-Section babies a microbiome boost
NCT ID NCT02567071
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tested whether giving C-section newborns a swab coated with their mother's vaginal and perineal fluids could restore the natural gut bacteria they would have gotten during a vaginal birth. Thirty-three mothers and their babies participated, with some babies receiving the treated swab and others a clean swab. The goal was to see if this simple procedure could improve the diversity of the baby's gut microbiome, which is linked to better immune health.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- perineal and vaginal secretions on a swab
- What this could lead to
- If it works, this simple swab technique could help C-section babies develop a healthier gut microbiome, potentially reducing risks of allergies, asthma, and other immune-related conditions.
- What could go wrong
- This is a very small, early study (33 participants) that only measured microbiome diversity and health questionnaires. It does not prove long-term health benefits, and the approach may not be effective or safe for all newborns.
This is an AI summary of the original study and may miss details. Read our disclaimer.
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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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Service de Gynécologie-Obstétrique, Groupe Hospitalier Pitié-Salpêtrière
Paris, 75013, France