Clinical trialNCT00242424CompletedPhase 2/PHASE3Interventional

Safety and Immunogenicity of Inactivated Influenza Virus Vaccine Among Healthy Children 6-12 Weeks of Age

SponsorSeattle Children's HospitalEnrollment1,375Inactivated Influenza Vaccine

View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

Study of the safety and immunogenicity (antibody producing capability) comparing inactivated influenza vaccine to placebo given to infants at 2 and 3 months of age. Infants will receive inactivated influenza vaccine at the same time as other vaccines on the routine immunization schedule. Infants will be randomized at enrollment to receive inactivated influenza vaccine or placebo at a 2:1 ratio. This study is double-blind, randomized, and placebo-controlled.

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Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

Janet A Englund, MD
Seattle Children's Hospital
Study Chair
clinicaltrials.gov ↗

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

1 registered facility, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States

Seattle Children'S Hospital and Regional Medical Center
Seattle, Washington, United States

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

The drug and biological interventions registered on this study, normalized to their RxNorm ingredient where possible.

2005-2006 trivalent inactivated influenza vaccine

Linked drugs open the directory filtered to KOLs working with them.clinicaltrials.gov ↗

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start: 30 Sept 2005
Primary completion: 30 Sept 2006
Completion: 30 Sept 2007
Last update posted: 28 Jan 2009
Registered enrollment: 1,375
Registry id: NCT00242424

clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 24 Aug 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.