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Phase 3 Study of Novavax Vaccine(s) as Booster Dose After mRNA Vaccines

NCT05875701 · Status: COMPLETED · Phase: PHASE3 · Type: INTERVENTIONAL · Enrollment: 147

Last updated 2025-06-26

Study results available
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Summary

This is an open-label Phase 3 study evaluating the immunogenicity and safety of Novavax vaccine(s) with Matrix-M™ adjuvant (ancestral strain NVX-CoV2373 and an alternative strain and/or multivalent Novavax vaccine) as booster doses following a series of primary and booster doses of authorized/approved mRNA vaccines followed by a single booster dose of NVX-CoV2373 in the Novavax 2019nCoV-307 study (NCT05463068).

Conditions

Interventions

BIOLOGICAL

NVX-CoV2373

1 intramuscular (IM) injection of 5 µg SARS-CoV-2 rS + 50 µg Matrix-M1 adjuvant (0.5 mL) given on Day 1

BIOLOGICAL

SARS-CoV-2 rS antigen/Matrix-M Adjuvant

1 intramuscular (IM) injection of 5 µg SARS-CoV-2 rS antigen+ 50 µg Matrix-M1 adjuvant (0.5 mL) given on Day 1

Sponsors & Collaborators

  • Novavax

    lead INDUSTRY

Principal Investigators

  • Clinical Development · Novavax, Inc.

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
49 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2023-03-28
Primary Completion
2023-11-11
Completion
2023-11-11
FDA Drug
Yes

Countries

  • United States

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05875701 on ClinicalTrials.gov