New 31-Strain pneumonia vaccine shows promise in large trial

NCT ID NCT07284654

Ongoing ⭐️ VACCINE ⭐️ Sponsor: Vaxcyte, Inc. Source: ClinicalTrials.gov ↗

First seen Jan 07, 2026 · Last updated May 15, 2026 · Updated 23 times

Summary

This study tests a new vaccine called VAX-31 to see if it is safe and creates a strong immune response against pneumonia-causing bacteria. About 4,000 healthy adults aged 50 and older, plus some younger adults, will receive either VAX-31 or an existing vaccine. Researchers will compare side effects and antibody levels to determine if VAX-31 works better against more bacterial strains.

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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Contacts and locations

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Locations

Accel Research Site - Achieve - Birmingham - ERN

Birmingham, Alabama, 35216, United States
Advanced Memory Research Institute - CenExe

Toms River, New Jersey, 08755, United States
Alliance for Multispecialty Research, LLC - Kansas City

Kansas City, Missouri, 64114, United States
Alliance for Multispecialty Research, LLC - West Wichita

Wichita, Kansas, 67207, United States
CTI Clinical Research Center

Cincinnati, Ohio, 45212, United States
Center for Indigenous Health - Chinle - Johns Hopkins Project

Chinle, Arizona, 86503, United States
Center for Indigineous Health - Gallup - John Hopkins Project

Gallup, New Mexico, 87301, United States
Center for Indigineous Health - Shiprock - John Hopkins Project

Shiprock, New Mexico, 87420, United States
Center for Indigineous Health - Whiteriver - John Hopkins Project

Whiteriver, Arizona, 85941, United States
Charlottesville Medical Research Center - Alcanza - HyperCore

Charlottesville, Virginia, 22911, United States
Clinical Innovations Trials - Riverside - CenExel

Riverside, California, 92506, United States
Clinical Research Atlanta - Headlands

Stockbridge, Georgia, 30281, United States
Coastal Carolina Research Center - Alcanza - HyperCore

North Charleston, South Carolina, 29405, United States
DM Clinical Research - Philadelphia

Philadelphia, Pennsylvania, 19107, United States
DM Clinical Research - Sugarland

Sugar Land, Texas, 77478, United States
DelRicht Clinical Research, LLC - New Orleans

New Orleans, Louisiana, 70115, United States
DelRicht Research, LLC - Gulfport

Gulfport, Mississippi, 39503, United States
Flourish Research - San Antonio

San Antonio, Texas, 78229, United States
Headlands Research - Detroit - Headlands

Southfield, Michigan, 48034, United States
Health Awareness - Jupiter - ERN

Jupiter, Florida, 33458, United States
JBR Clinical Research - CenExel JBR

Salt Lake City, Utah, 84107, United States
Johnson County Clin-Trials - JCCT

Lenexa, Kansas, 66219, United States
Lynn Institute of Norman

Norman, Oklahoma, 73072, United States
Precision Clinical Research - Sunrise

Sunrise, Florida, 33351, United States
Research Centers of America - Hollywood - CenExel

Hollywood, Florida, 33024, United States
Rochester Clinical Research - ATLAS - Rochester

Rochester, New York, 14609, United States
Sky Integrative Medical Center - SKYCRNG

Ridgeland, Mississippi, 39157, United States
Suncoast Research Group LLC

Miami, Florida, 33135, United States
Velocity Clinical Research

Omaha, Nebraska, 68134, United States
Velocity Clinical Research - Valparaiso (Buynak Clinical Research)

Valparaiso, Indiana, 46383, United States

Conditions

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PNEUMOCOCCAL VACCINES