New chickenpox vaccine for toddlers shows promise in safety trial

NCT ID NCT06693895

Recruiting now ⭐️ VACCINE ⭐️ Sponsor: GlaxoSmithKline Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests a new chickenpox vaccine in 750 healthy children aged 12-15 months. Researchers will compare its safety to the existing Varivax vaccine. The goal is to see if the new vaccine causes similar side effects like injection site pain, fever, or rash.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: investigational varicella vaccine
What this could lead to: If successful, this could provide a safe and effective alternative chickenpox vaccine for young children.
What could go wrong: This is an early-stage safety study, so it may not prove the vaccine prevents chickenpox. Side effects like fever or rash are possible.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

chickenpox prevention target

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

CHICKENPOX

Contacts and locations

Locations

GSK Investigational Site
WITHDRAWN

Phoenix, Arizona, 85006, United States
GSK Investigational Site
WITHDRAWN

Tucson, Arizona, 85741, United States
GSK Investigational Site
RECRUITING

Huntington Park, California, 90057, United States
GSK Investigational Site
RECRUITING

National City, California, 91950, United States
GSK Investigational Site
RECRUITING

West Covina, California, 91790, United States
GSK Investigational Site
RECRUITING

Hialeah, Florida, 33012, United States
GSK Investigational Site
RECRUITING

Miami, Florida, 33142, United States
GSK Investigational Site
RECRUITING

Chicago, Illinois, 60621, United States
GSK Investigational Site
WITHDRAWN

El Dorado, Kansas, 67042, United States
GSK Investigational Site
RECRUITING

Lafayette, Louisiana, 70508, United States
GSK Investigational Site
RECRUITING

Mankato, Minnesota, 56002, United States
GSK Investigational Site
RECRUITING

Lincoln, Nebraska, 68516, United States
GSK Investigational Site
RECRUITING

Cincinnati, Ohio, 45245, United States
GSK Investigational Site
RECRUITING

Dallas, Texas, 75230-2571, United States
GSK Investigational Site
WITHDRAWN

Dallas, Texas, 75235, United States
GSK Investigational Site
RECRUITING

Houston, Texas, 77065, United States
GSK Investigational Site
RECRUITING

Richmond, Texas, 77469, United States
GSK Investigational Site
RECRUITING

Richmond, Texas, 77469, United States
GSK Investigational Site
WITHDRAWN

San Antonio, Texas, 78244, United States
GSK Investigational Site
COMPLETED

Roy, Utah, 84067, United States
GSK Investigational Site
RECRUITING

Syracuse, Utah, 84075, United States
GSK Investigational Site
RECRUITING

Richmond, Virginia, 23294, United States
GSK Investigational Site
WITHDRAWN

Vienna, Virginia, 22180, United States
GSK Investigational Site
WITHDRAWN

Burgas, 8008, Bulgaria
GSK Investigational Site
RECRUITING

Gabrovo, 5300, Bulgaria
GSK Investigational Site
RECRUITING

Kyustendil, 2500, Bulgaria
GSK Investigational Site
RECRUITING

Plovdiv, 4002, Bulgaria
GSK Investigational Site
RECRUITING

Rousse, 7000, Bulgaria
GSK Investigational Site
RECRUITING

Sevlievo, 5400, Bulgaria
GSK Investigational Site
WITHDRAWN

Yambol, 8600, Bulgaria
GSK Investigational Site
RECRUITING

Aarhus N, 8200, Denmark
GSK Investigational Site
RECRUITING

Copenhagen, DK-2100, Denmark
GSK Investigational Site
RECRUITING

Hvidovre, 2650, Denmark
GSK Investigational Site
RECRUITING

Odense C, DK-5000, Denmark
GSK Investigational Site
RECRUITING

Tallinn, 10615, Estonia
GSK Investigational Site
RECRUITING

Tallinn, 10617, Estonia
GSK Investigational Site
RECRUITING

Hong Kong, 00852, Hong Kong
GSK Investigational Site
RECRUITING

Shatin, Hong Kong
GSK Investigational Site
RECRUITING

Kaunas, 47116, Lithuania
GSK Investigational Site
RECRUITING

Kaunas, LT-48259, Lithuania
GSK Investigational Site
RECRUITING

Durango, 34000, Mexico
GSK Investigational Site
RECRUITING

Tlalpan, 14340, Mexico
GSK Investigational Site
RECRUITING

Tlalpan, 14340, Mexico
GSK Investigational Site
RECRUITING

Bydgoszcz, 85-796, Poland
GSK Investigational Site
RECRUITING

Trzebnica, 55-100, Poland
GSK Investigational Site
RECRUITING

Warsaw, 02-172, Poland

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