Pneumococcal Vaccine Study for Infants: PCV21

We are investigating a new 21-valent vaccine for healthy infants starting at 2 months old. The study aims to see if it works as well or better than the current vaccine in protecting against pneumonia.

6-10 visits Confirmation phase (III)No Placebo Investigational Medicines InjectionInfectious DiseasesPediatrics

What diseases are being studied?

Health conditions and diseases that the clinical trial is designed to study and treat.

Who can participate in the clinical trial?

These questions help us understand your situation so we can let the trial team know whether you might be a potential match. This is not a medical evaluation and is not part of the official screening, the study doctor will make the final decision..

What medicines are being studied?

Medicines that are officially approved for use in the European Union and considered safe by EMA. These medicines are already on the market and may be tested for new conditions or populations.

Vaxneuvance

Vaxneuvance is a vaccine that helps protect people against pneumococcal infections, like pneumonia, bloodstream infections, and ear infections.

What active substances are being studied?

Active substances that are officially approved for use in the European Union and considered safe by EMA. These substances are already on the market and may be tested for new conditions or populations.

Aluminium

Aluminium is a metal often used in compounds to neutralize stomach acid or act as an immune-response enhancer in vaccines.

Pneumococcal Oligosaccharide Serotype 18c Conjugated To Crm197

Pneumococcal oligosaccharide serotype 18c conjugated to CRM197 is a vaccine component that helps the immune system protect against infections by pneumococcus serotype 18C.

Pneumococcal Polysaccharide Serotype 1

Pneumococcal polysaccharide serotype 1 is a vaccine component that helps the immune system prevent infections caused by pneumococcus serotype 1.

What experimental substances are being tested?

Experimental substances that are being investigated in this clinical trial. These are not yet approved for general use.

Pneumococcal Conjugate Vaccine

What similar medicines might you know?

Don't worry if you don't know the medicines tested in the trial. There is a chance you have heard about the similar medicines. Check the list below to see if you are familiar with any of them.

Capvaxive

Where is the clinical trial being conducted?

Locations and medical facilities where this clinical trial is currently recruiting or conducting research. Select the locations where you would like to participate.

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Anima

Alken, Belgium

UZ Leuven

Pediatrics Department

Heverlee, Belgium

Medif

Montigny-le-Tilleul, Belgium

Sponsor: Sanofi Pasteur Inc.

Last updated: Nov 26, 2025

Disclaimer: Parts of this content have been automatically extracted from the EU Clinical Trials registry. While we strive for accuracy, please always contact the trial site or sponsor directly for correct and official information before making any decisions about participation. View on EU Clinical Trials.