RecruitingRSV Infection
A Phase 3 Study of Revaccination in Subsequent Pregnancies With Bivalent RSV Vaccine and Duration of Protection of a Single Dose
Eligible age
0+ yrs
Accepts
All genders
Locations
20 states
Healthy volunteers
Yes
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About this study
This study aims to check how safe and well-tolerated a second dose of RSVpreF is when given during later pregnancies, and to see how long the immunity lasts from a single dose given during a previous pregnancy by examining the blood of nonpregnant participants who had the vaccine before.
Sponsor: Pfizer
Where it's recruiting
Alabama
Birmingham · Mobile
California
Los Angeles · Palo Alto
Colorado
Aurora
Florida
North Miami Beach · Panama City
Idaho
Boise · Idaho Falls · Nampa
Iowa
Ames
Kansas
Kansas City
Louisiana
Lafayette · New Orleans
Massachusetts
Boston
Mississippi
Gulfport
Montana
Great Falls · Kalispell · Missoula
Nebraska
Grand Island · Norfolk
Source: ClinicalTrials.gov · NCT06866405 · last updated 2026-06-16