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NCT03298334RecruitingPhase 1/2

Vaginal Microbiome Seeding and Health Outcomes in Cesarean-delivered Neonates.

Vaginal Microbiome Seeding and Health Outcomes in Cesarean-delivered Neonates: a Randomized Controlled Trial

Source: ClinicalTrials.gov · Last updated 8 Jun 2025 · Not updated for over 12 months - ask the site whether it is still open

Brief summary (registry, in English)

Neonates delivered by scheduled Cesarean Section will be randomized to receive vaginal seeding (exposing the infant to Mother's vaginal flora) or sham. Infants will be followed for three years to examine health outcomes including microbiome development, immune development, metabolic outcomes, and any adverse events.

Status (registry)
Recruiting
Phase (registry)
Phase 1/2
Study type
Interventional
Enrollment
600 (estimated)
First submitted
27 Sept 2017
Start date
1 Jul 2018
Primary completion date
30 Apr 2027
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
Diseases
Obesity
NCT number
NCT03298334

What you commit to

  • Study type: Interventional · Phase 1/2
  • Planned participants: 600
  • From 1 Jul 2018 to the primary completion date, 30 Apr 2027
  • 1 site in 1 country
  • Visits and tests: ask the trial team, the registry does not list them

Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.

Who cannot take part

Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.

Prior treatment

  • Rupture of membranes prior to scheduled cesarean delivery
  • Antibiotic therapy within 30 days of cesarean delivery (exclusive of medication use for prophylaxis at the time of surgery)

Other illness

  • Cesarean delivery scheduled for active infection that would have interfered with vaginal delivery such as genital herpetic lesions
  • Symptomatic urinary tract infection within 30 days of cesarean delivery
  • Symptoms on delivery admission of possible vaginal infection such as genital herpetic lesions
  • History of genital HSV
  • History positive testing for Group B strep infection
  • History of a child with a diagnosis of Group B strep sepsis
  • Preexisting history of Type I or Type II Diabetes
  • Maternal history of documented genital HPV infection, positive HPV testing or genital warts on physician examination
  • Positive maternal testing for SARS-CoV-2 within 30 days of delivery or symptoms on admission suggesting potential Covid-19 infection

Other

  • Delivery at a hospital other than Inova Health System
  • Bacterial vaginosis within 30 days of cesarean delivery
  • Symptoms on admission suggesting Chorioamnionitis, e.g. maternal fever, fundal tenderness
  • Pregnancy a result of donor egg or surrogacy

Who the study is looking for

  • Scheduled for cesarean delivery at ≥ 37 weeks
  • Pregnant with single fetus, in good general health, age 18 years or older
  • Negative maternal testing for infections transmitted through vaginal and/or other body fluids performed as standard of care tests in early pregnancy
  • Negative testing for Group B strep at 35-37 weeks gestation
  • Vaginal pH ≤ 4.5 indicative of Lactobacillus-dominated vaginal microbiota
  • No maternal or fetal complications that may inhibit the ability to perform microbiome restoration per protocol
  • English or Spanish speaking
  • Negative maternal testing for Gonorrhea, Chlamydia, Hepatitis B, Hepatitis C, Syphilis, and HIV at 35 weeks gestation or later
  • Women aged 18-29 years must have a normal Pap test within 3 years
  • Women aged 30-65 years must have a normal Pap test and an HPV test (co-testing) within 5 years or FDA-approved primary hrHPV testing alone within 5 years or a normal Pap test alone within 3 years
  • Negative maternal testing for SARS-CoV-2 for the delivery admission performed as standard of care test at the Inova Health System.
  • Infant condition after delivery requires no more than standard neonatal resuscitation\* or is otherwise medically unable to receive the full VMT procedure
    • \[\*\] Standard neonatal resuscitation may include: tactile stimulation, bulb suction, oxygen without positive pressure, or drying

Age in the registry: 0 days to 50 years · Sex: All · Accepts healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (1)

Sites in registry order. Pick your city on the disease page to sort them by distance.

SiteCityCountrySite status
Inova Health System
Coordinator of this site? Confirm its status
Falls ChurchUnited StatesRecruiting

This page is information, not medical advice. Discuss any trial with your doctor.