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Study identifier: NCT07160244 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

BEATRIX: A Study to Learn About a Group B Streptococcus Vaccine in Healthy Pregnant Women and Their Babies

Condition: Healthy  ·  Sponsor: Pfizer

PhasePhase 3
Planned participants6000
Who can joinAll sexes, 1 Day to 49 Years
Healthy volunteersYes

About this study

BEATRIX (group B strEptococcus mATeRnal and Infant VaX study) The purpose of this study is to learn about the safety and how the group B streptococcus (GBS) vaccine works in pregnant women and their babies. This study is seeking healthy pregnant participants: * aged 49 or younger who can join. * between 24 and 36 weeks of gestation ("Gestational age" is a medical term used to describe how far along your pregnancy is) * had a fetal ultrasound examination performed with no major fetal abnormalities observed * documented negative for HIV, syphilis and Hepatitis B All participants in this study will receive only 1 shot in an arm. This could either be a group B streptococcus 6-valent polysaccharide conjugate vaccine (GBS6) or placebo. Placebo is an inactive substance used in the study for comparison purposes; in this study, the placebo injection will be saline (saltwater). The pregnant participants may take part in this study for a maximum of 14 months (6 months after delivery) , and their babies for about 12 months after they are born. The pregnant participants will need to visit the research site at least 3 to 4 times with some visits permitted to occur over the telephone. A subset of infants will be asked to take part in the study for up to 19 months. The subset will receive diphtheria toxoid-containing vaccine and/or pneumococcal vaccine following each country's standard immunization plan and have blood drawn 1 month after completion of the primary and/or toddler (booster) …

This description comes directly from the study's public registry record.

Talk to the study team

Pfizer CT.gov Call Center  ·  1-800-718-1021  ·  ClinicalTrials.gov_Inquiries@pfizer.com

Always discuss trial participation with your own doctor first.

Locations (207)

Center for Research in Women's HealthBirmingham, Alabama, United StatesRecruiting
Children's of AlabamaBirmingham, Alabama, United StatesRecruiting
University of Alabama at Birmingham - School of MedicineBirmingham, Alabama, United StatesRecruiting
University of Alabama at Birmingham Women & Infants CenterBirmingham, Alabama, United StatesRecruiting
SEC Clinical ResearchDothan, Alabama, United StatesRecruiting
USA Health Allen Cox BuildingMobile, Alabama, United StatesRecruiting
USA Health Children's and Women's HospitalMobile, Alabama, United StatesRecruiting
USA Health Mitchell Cancer InstituteMobile, Alabama, United StatesRecruiting
USA Health Strada Patient Care CenterMobile, Alabama, United StatesRecruiting
ClinMedPhoenix, Arizona, United StatesRecruiting
Valleywise Comprehensive Health Center Women's ClinicPhoenix, Arizona, United StatesRecruiting
Valleywise Health Medical CenterPhoenix, Arizona, United StatesRecruiting

+ 195 more locations — full list on the registry record.

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Source record: clinicaltrials.gov/study/NCT07160244