Clinical trial Recruiting at 72 sites Phase 3 Interventional Ages 42 Days to 98 Days

New pneumococcal vaccine for healthy infants

Official title: A PHASE 3, RANDOMIZED, DOUBLE-BLINDED TRIAL TO EVALUATE THE SAFETY AND TOLERABILITY OF A MULTIVALENT PNEUMOCOCCAL CONJUGATE VACCINE IN HEALTHY INFANTS

Run by Pfizer · NCT07573462 · Data updated 2026-11-12

A new pneumococcal vaccine is being tested in about 2-month-old healthy babies to see if it is as safe as Prevnar 20 and whether it may offer broader protection against germs that cause pneumonia, meningitis, and ear infections.

Quick facts

PhasePhase 3
Study typeInterventional
Ages42 Days to 98 Days
SexAll
Enrollment2400 (estimated)
SponsorPfizer
Industry-sponsored
Locations91 sites (Estero, Florida and 90 other locations)
StatusRecruiting
StartedMay 4, 2026
Main results expectedDecember 30, 2028
Study endsDecember 30, 2028
Registry record updatedNovember 6, 2026
Trial IDNCT07573462 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Infants about 2 months old who are healthy by clinical assessment and have no history of severe vaccine reactions or major congenital or chronic conditions.

Probably not a fit

Infants with a history of severe allergic reactions to vaccines or with certain serious chronic or acute conditions may not benefit or may be excluded from participation.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a Phase 3 interventional trial comparing a new 20-valent pneumococcal vaccine to the currently used Prevnar 20 in healthy infants around 2 months old. Approximately 2,400 participants will be randomized into two groups to receive the vaccines and be followed for safety. The study aims to determine whether the new vaccine has a safety profile similar to Prevnar 20 and whether it may provide additional protection against pneumococcal germs not covered by existing vaccines. Enrollment is limited to healthy infants at participating centers in Florida. No collaborators beyond the sponsor are listed, and the study is led by Pfizer with multiple pediatric sites involved.

Why it matters

Potential benefit: If successful, the new vaccine could provide broader protection against pneumococcal disease while maintaining a similar safety profile.

How similar studies have gone: Other studies of pneumococcal vaccines have demonstrated safety, with ongoing exploration of broader protection in infants.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Infants who are about 2 months of age
* Healthy infants determined by clinical assessment, including medical history and clinical judgment, to be eligible for the study.

Exclusion Criteria:

* History of severe adverse reaction associated with a vaccine and/or severe allergic reaction (eg, anaphylaxis).
* Major known congenital malformation or serious chronic disorder.
* Other acute or chronic medical or psychiatric condition or laboratory abnormality that may increase the risk associated with study participation or investigational product administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the participant inappropriate for entry into this study.
* Previous vaccination with any licensed or investigational pneumococcal vaccine, or planned receipt through study participation.

Where it's running

  • Starz Pediatrics
    Estero, Florida, United States
    Recruiting
  • Innovate Research Centers, LLC
    Fort Lauderdale, Florida, United States
    Recruiting
  • MacKoul Pediatrics Fort Myers
    Fort Myers, Florida, United States
    Recruiting
  • Speranza Research Center
    Hialeah, Florida, United States
    Recruiting
  • Dr. Gala, LLC
    Miami, Florida, United States
    Recruiting
  • Rophe Adult and Pediatric Medicine/SKYCRNG
    Union City, Georgia, United States
    Recruiting
Show 44 more locations
  • Rosemark Women Care Specialists
    Idaho Falls, Idaho, United States
    Recruiting
  • Eagle Clinical Research
    Chicago, Illinois, United States
    Recruiting
  • Kentucky Pediatric/ Adult Research
    Bardstown, Kentucky, United States
    Recruiting
  • LSU Health Shreveport Clinical Trials Office
    Shreveport, Louisiana, United States
    Recruiting
  • Ochsner LSU Health - Progressive Pediatrics
    Shreveport, Louisiana, United States
    Recruiting
  • Ochsner LSU Health Shreveport Academic Medical Center
    Shreveport, Louisiana, United States
    Recruiting
  • Ochsner LSU Health Shreveport Ambulatory Care Center
    Shreveport, Louisiana, United States
    Recruiting
  • Pediatric Associates of Fall River
    Fall River, Massachusetts, United States
    Recruiting
  • Lincoln Pediatric Group
    Lincoln, Nebraska, United States
    Recruiting
  • Boston Children's Health Physicians
    Hawthorne, New York, United States
    Recruiting
  • Maria Fareri Children's Hospital
    Valhalla, New York, United States
    Recruiting
  • Senders Pediatrics
    South Euclid, Ohio, United States
    Recruiting
  • Legacy Clinical Trials
    Oklahoma City, Oklahoma, United States
    Recruiting
  • Cyn3rgy Research Corporation
    Gresham, Oregon, United States
    Recruiting
  • Donald Guthrie Foundation
    Sayre, Pennsylvania, United States
    Recruiting
  • Guthrie Medical Group
    Sayre, Pennsylvania, United States
    Recruiting
  • Tribe Clinical Research LLC. at Parkside Pediatrics Five Forks
    Simpsonville, South Carolina, United States
    Recruiting
  • National Research Centers, Plano LLC
    Plano, Texas, United States
    Recruiting
  • Pediatric Research of Charlottesville, LLC.
    Gordonsville, Virginia, United States
    Recruiting
  • The Children's Hospital at Westmead
    Westmead, New South Wales, Australia
    Recruiting
  • Queensland Children's Hospital
    Brisbane, Queensland, Australia
    Recruiting
  • Centre for Children's Health Research
    South Brisbane, Queensland, Australia
    Recruiting
  • Monash Health
    Clayton, Victoria, Australia
    Recruiting
  • Murdoch Children's Research Institute
    Parkville, Victoria, Australia
    Recruiting
  • Perth Children's Hospital
    Nedlands, Western Australia, Australia
    Recruiting
  • The Kids Research Institute Australia
    Nedlands, Western Australia, Australia
    Recruiting
  • Milestone Research Inc.
    London, Ontario, Canada
    Recruiting
  • Bluewater Clinical Research Group Inc.
    Sarnia, Ontario, Canada
    Recruiting
  • FVR, Kokkolan rokotetutkimusklinikka
    Kokkola, Keski-Pohjanmaa, Finland
    Recruiting
  • FVR, Oulun rokotetutkimusklinikka
    Oulu, North Ostrobothnia, Finland
    Recruiting
  • FVR, Tampereen rokotetutkimusklinikka
    Tampere, Pirkanmaa, Finland
    Recruiting
  • FVR, Turun rokotetutkimusklinikka
    Turku, Southwest Finland, Finland
    Recruiting
  • FVR, Espoon rokotetutkimusklinikka
    Espoo, Uusimaa, Finland
    Recruiting
  • FVR, Etelä-Helsingin rokotetutkimusklinikka
    Helsinki, Uusimaa, Finland
    Recruiting
  • MeVac - Meilahti Vaccine Research Center
    Helsinki, Uusimaa, Finland
    Recruiting
  • FVR, Järvenpään rokotetutkimusklinikka
    Jarvenpaa, Uusimaa, Finland
    Recruiting
  • Kinder- und Jugendarztpraxis Dr. med. Michael Horn
    Schönau am Königssee, Bavaria, Germany
    Recruiting
  • Kinderärztliche Gemeinschaftspraxis Dr. med. Sören Westerholt Dr. med. Jan Matyas
    Wolfsburg, Lower Saxony, Germany
    Recruiting
  • Kinderarztpraxis Dr. Petri
    Hürth, North Rhine-Westphalia, Germany
    Recruiting
  • Private office pediatrics
    Hürth, North Rhine-Westphalia, Germany
    Recruiting
  • Dr. med. Karsten Jünger
    Herxheim, Rhineland-Palatinate, Germany
    Recruiting
  • FMZ Radowsky
    Leipzig, Saxony, Germany
    Recruiting
  • Ippokrateio General Hospital of Thessaloniki
    Thessaloniki, Kentrikí Makedonía, Greece
    Recruiting
  • Lurko-Med Kft Hazi Gyermekorvosi Rendelo
    Budapest, Hungary
    Recruiting

+41 more sites. See ClinicalTrials.gov for the full list.

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.