CompletedNot Applicable

COVID-19 Vaccines International Pregnancy Exposure Registry

United States1,184 participantsStarted 2021-06-01

Plain-language summary

The objective of the COVID-19 Vaccines International Pregnancy Exposure Registry (C-VIPER) is to evaluate obstetric, neonatal, and infant outcomes among women vaccinated during pregnancy with a COVID-19 vaccine. Specifically, the C-VIPER will estimate the risk of obstetric outcomes (spontaneous abortion, antenatal bleeding, gestational diabetes, gestational hypertension, intrauterine growth restriction, postpartum hemorrhage, fetal distress, uterine rupture, placenta previa, chorioamnionitis, Caesarean delivery, COVID-19), neonatal outcomes (major congenital malformations, low birth weight, neonatal death, neonatal encephalopathy, neonatal infections, neonatal acute kidney injury, preterm birth, respiratory distress in the newborn, small for gestational age, stillbirth, COVID-19), and infant outcomes (developmental milestones \[motor, cognitive, language, social-emotional, and mental health skills\], height, weight, failure to thrive, medical conditions during the first 12 months of life, COVID-19) among pregnant women exposed to single (homologous) or mixed (heterologous) COVID-19 vaccine brand series from 30 days prior to the first day of the last menstrual period to end of pregnancy and their offspring relative to a matched reference group who received no COVID-19 vaccines during pregnancy.

Who can participate

Age range

18 Years – 50 Years

Sex

FEMALE

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion criteria: Vaccinated population: * Pregnant at time of enrollment * Age ≥18 years at time of enrollment * Signed the informed consent form and submitted the baseline module "COVID-19 Vaccination During This Pregnancy" * Received at least one dose of a COVID-19 vaccine during pregnancy or within the 30 days prior to the first day of the LMP * Resident of a country where a Central Institutional Review Board (IRB) or Ethics Committee provided approval to conduct the study or clearance that approval is not required to conduct the study Efforts will be made to obtain documentary evidence of COVID-19 vaccination. Comparison population: * Pregnant at time of enrollment * Age ≥18 years at time of enrollment * Signed the informed consent form and submitted the minimum required data in the initial baseline questionnaire * Have not received a COVID-19 vaccine during pregnancy or within the 30 days prior to the first day of the LMP * Resident of a country where a Central IRB or Ethics Committee provided approval to conduct the study or clearance that approval is not required to conduct the study Exclusion criteria: * Not pregnant at time of enrollment * Age \<18 years at time of enrollment

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Obstetric outcomes

Timeframe: 1 year

Neonatal outcomes

Timeframe: 1 year

Infant weight

Timeframe: 1 year

Infant developmental milestones

Timeframe: 1 year

Infant COVID-19 diagnosis

Timeframe: 1 year

Infant height

Timeframe: 1 year

Trial details

NCT IDNCT04705116

SponsorPregistry

Sponsor typeINDUSTRY

Study typeOBSERVATIONAL

Primary completion2026-04-26

View on ClinicalTrials.gov More Covid19 trials

Plain-language summary

Who can participate

Age range

18 Years – 50 Years

Sex

FEMALE

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.