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NVX-CoV2705 Vaccine

Phase 3

Severe Acute Respiratory Syndrome Coronavirus 2 Infection | Vaccine | Infectious Disease |Novavax, Inc.|Trials Updated: Jul 18, 2025

NVX-CoV2705 Vaccine development status

Highest phase Phase 3
Registered trials 1 across 1 sponsor since May 2024

NVX-CoV2705 Vaccine target and mechanism

ModalityVaccine

Also known as SARS-CoV-2 rS

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials1
Total Enrollment60

FDA Designations

No designations recorded

NVX-CoV2705 Vaccine clinical trials

NVX-CoV2705 Vaccine · 1 trial · 1 indication

Phase 3 1
NCT06409663A Strain Change Study for SARS-CoV-2 rS VaccinesSevere Acute Respiratory Syndrome Coronavirus 2 Infection
COMPLETED60 Analytics
PHASE3COMPLETED
A Strain Change Study for SARS-CoV-2 rS Vaccines
Severe Acute Respiratory Syndrome Coronavirus 2 InfectionUnlock trial analytics

Study Endpoints

Primary Endpoints

Incidence, duration, and severity of solicited local and systemic adverse events (AEs)
Day 7[ following 1st vaccination]

Incidence, duration, and severity of solicited local and systemic adverse events (AEs) for 7 days following vaccination.

Incidence, severity, and relationship of any unsolicited AEs
Day 28

Incidence, severity, and relationship of any unsolicited AEs through 28 days after vaccination.

Incidence and severity of treatment-related MAAEs, adverse events of special interest and serious adverse events interest (AESIs; predefined list, including PIMMCs, myocarditis and/or pericarditis), and serious adverse events (SAEs)
Day 180 or end of study (EoS).

Incidence and severity of treatment-related MAAEs, adverse events of special interest and serious adverse events interest (AESIs; predefined list, including PIMMCs, myocarditis and/or pericarditis), and serious adverse events (SAEs) through day 180 or end of study (EoS).

Secondary Endpoints

Pseudovirus neutralization titers for the JN.1 subvariant expressed as GMTs
Day 0 to Day 28
Pseudovirus neutralization antibody responses against the JN.1 subvariant Expressed as GMFR
Day 0 to Day 28
Pseudovirus neutralization antibody responses against the JN.1 subvariant Expressed as SRRs
Day 28
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposePREVENTION

Treatment Arms

ArmTypeDescription
NVX-CoV2705 vaccine (5 µg )EXPERIMENTALNVX-CoV2705 COVID-19 vaccine will contain rS antigen from the JN.1 subvariant of SARS-CoV-2

Interventions

NameTypeDescription
NVX-CoV2705 VaccineBIOLOGICALAll injections will be administered in a 0.5 mL injection volume at an antigenic dose of 5 µg with 50 µg Matrix-M adjuvant at each injection.
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Eligibility Criteria

Age Range18 Years to 90 Years
SexALL
Healthy VolunteersYes
Study Sites2

Inclusion Criteria: 1. Adults ≥ 18 years of age at time of study vaccination. 2. Previously vaccinated with ≥ 3 doses of an authorized/approved COVID-19 vaccine with the last dose administered ≥ 6 months prior to study vaccination. 3. Willing and able to give informed consent prior to study enrollm...

Countries:United States
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Frequently asked questions about NVX-CoV2705 Vaccine

What is NVX-CoV2705 Vaccine?

NVX-CoV2705 Vaccine is an investigational vaccine developed by Novavax, Inc. for Severe Acute Respiratory Syndrome Coronavirus 2 Infection, the virus that causes COVID-19. It is a strain change study vaccine evaluated in a Phase 3 clinical trial. It is not an approved product and remains in clinical development.

What is NVX-CoV2705 Vaccine used for?

NVX-CoV2705 Vaccine is being studied for the prevention of Severe Acute Respiratory Syndrome Coronavirus 2 Infection, the virus responsible for COVID-19. The Phase 3 strain change study enrolled healthy adult volunteers aged 18 years and older in the United States. The vaccine is investigational and has not been approved for use.

Who makes NVX-CoV2705 Vaccine?

NVX-CoV2705 Vaccine is developed by Novavax, Inc., which trades on the Nasdaq under the ticker NVAX. Novavax is the sponsor of the Phase 3 strain change study evaluating the vaccine. The company is a vaccine-focused biotechnology firm.

What phase is NVX-CoV2705 Vaccine in?

NVX-CoV2705 Vaccine is in Phase 3 clinical development. Its single registered trial, NCT06409663, titled A Strain Change Study for SARS-CoV-2 rS Vaccines, is listed as completed. The vaccine is investigational and is not an approved product.

What clinical trials is NVX-CoV2705 Vaccine in?

NVX-CoV2705 Vaccine has been evaluated in one registered clinical trial, NCT06409663, titled A Strain Change Study for SARS-CoV-2 rS Vaccines. This Phase 3 trial enrolled 60 healthy adult volunteers aged 18 years and older in the United States and is listed as completed. It was an uncontrolled study.