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Clinical trialNCT03722589CompletedPhase 4Interventional

Immunogenicity Trial of Egg- Versus Non-Egg-Based Influenza Vaccines Among HCP

SponsorCenters for Disease Control and PreventionEnrollment944Influenza
View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

This randomized, open-label trial will assess humoral and cell-mediated immune responses to cell culture-based and recombinant unadjuvanted quadrivalent influenza vaccines compared to conventional egg-based unadjuvanted quadrivalent standard dose (15µg of HA per strain) influenza vaccines among persons aged 18-64 years. The trial will be conducted at two sites in the United States during two influenza seasons (2018-19 and 2019-20). Stratified enrollment procedures will be used to enroll a mix of participants based on age.
clinicaltrials.gov ↗

Investigators

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

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

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

United States
  • Kaiser Permanente Northwest

    Portland, Oregon, United States

  • Baylor Scott and White Health

    Temple, Texas, 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.

FluarixFlublokFlucelvax →FluzoneFluzone High-Dose →
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
12 Sept 2018
Primary completion
31 Jul 2020
Completion
31 Jul 2020
Last update posted
22 Jul 2024
Registered enrollment
944
Registry id
NCT03722589
clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 4 Nov 2026. Registry facts are shown as registered by the study sponsor; FindMyKOL does not interpret them.