Booster shot keeps seniors safe from meningitis

NCT ID NCT04142242

Completed ⭐️ VACCINE ⭐️ Sponsor: Sanofi Pasteur, a Sanofi Company Source: ClinicalTrials.gov ↗

First seen Sep 30, 2025 · Last updated May 24, 2026 · Updated 34 times

Summary

This study looked at whether a single booster dose of the MenACYW conjugate vaccine can strengthen protection against meningococcal disease in adults aged 56 and older. Participants had received either an older or newer meningitis vaccine at least three years earlier. The goal was to see if the booster triggered a strong immune response against four key strains of the bacteria.

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Contacts and locations

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Locations

Investigational Site Number 6300001

San Juan, 00981, Puerto Rico
Investigational Site Number 8400001

Murray, Utah, 84123, United States
Investigational Site Number 8400002

Salt Lake City, Utah, 84107, United States
Investigational Site Number 8400003

San Diego, California, 92123-1881, United States
Investigational Site Number 8400004

Charlottesville, Virginia, 22911, United States
Investigational Site Number 8400005

Cincinnati, Ohio, 45246, United States
Investigational Site Number 8400007

Jacksonville, Florida, 32205, United States
Investigational Site Number 8400010

Elkridge, Maryland, 21075, United States
Investigational Site Number 8400011

Columbus, Ohio, 43212, United States
Investigational Site Number 8400012

Raleigh, North Carolina, 27612, United States
Investigational Site Number 8400013

Fargo, North Dakota, 58104, United States
Investigational Site Number 8400014

Uniontown, Pennsylvania, 15401, United States
Investigational Site Number 8400015

Jacksonville, Florida, 32216, United States
Investigational Site Number 8400016

Metairie, Louisiana, 70006, United States
Investigational Site Number 8400017

Wichita, Kansas, 67205, United States
Investigational Site Number 8400018

Anderson, South Carolina, 29621, United States
Investigational Site Number 8400019

Endwell, New York, 13760, United States
Investigational Site Number 8400020

West Palm Beach, Florida, 33409, United States
Investigational Site Number 8400021

Greensboro, North Carolina, 27408, United States
Investigational Site Number 8400022

Ponte Vedra, Florida, 32081, United States
Investigational Site Number 8400023

DeLand, Florida, 32720, United States
Investigational Site Number 8400024

Dallas, Texas, 75231, United States
Investigational Site Number 8400025

West Jordan, Utah, 84088-8865, United States
Investigational Site Number 8400026

Chandler, Arizona, 85225, United States
Investigational Site Number 8400027

Newton, Kansas, 67114, United States
Investigational Site Number 8400028

Waterbury, Connecticut, 06708, United States
Investigational Site Number 8400030

St Louis, Missouri, 63141, United States
Investigational Site Number 8400031

Richfield, Minnesota, 55423, United States
Investigational Site Number 8400032

Port Orange, Florida, 32127, United States
Investigational Site Number 8400033

Winston-Salem, North Carolina, 27103, United States
Investigational Site Number 8400034

Mt. Pleasant, South Carolina, 29464, United States
Investigational Site Number 8400035

Cincinnati, Ohio, 45241, United States
Investigational Site Number 8400036

Mt. Pleasant, South Carolina, 29464, United States
Investigational Site Number 8400038

Clearwater, Florida, 33756, United States

Conditions

Explore the condition pages connected to this study.

MENINGOCOCCAL INFECTION (HEALTHY VOLUNTEERS)