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RSV F vaccine

Phase 3

Respiratory Syncytial Virus Infections | Small molecule | Infectious Disease |Novavax, Inc.|Last Updated: May 6, 2025

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials2
Total Enrollment4,686

FDA Designations

No designations recorded

Clinical trial landscape

RSV F vaccine · 2 trials · 1 indication

Phase 3 1Phase 2 1
NCT02624947A Study to Determine the Safety and Efficacy of the RSV F Vaccine to Protect Infants Via Maternal ImmunizationRespiratory Syncytial Virus Infections
COMPLETED4,636 Analytics
PHASE3COMPLETED
A Study to Determine the Safety and Efficacy of the RSV F Vaccine to Protect Infants Via Maternal Immunization
Respiratory Syncytial Virus InfectionsUnlock trial analytics

Study Endpoints

Primary Endpoints

Infants: Percentages of Participants With Medically Significant RSV LRTI With Either Hypoxemia (SpO2 <95% at Sea Level or <92% at Altitudes >1800 Meters) or Tachypnea
Delivery to 180 days after delivery

Percentages of infants with medically-significant RSV LRTI from delivery through 90, 120,150, and 180 days of life, as defined by: * The presence of RSV infection confirmed by detection of RSV genome by RT-PCR on respiratory secretions (obtained within the continuous illness episode which fulfills the other criteria listed below); AND * At least one manifestation of lower respiratory tract infection (LRTI) from among the following: cough, nasal flaring, lower chest wall indrawing, subcostal retractions, stridor, rales, rhonchi, wheezing, crackles/crepitations, or observed apnea; AND * Evidence of medical significance as defined by the presence of: * EITHER hypoxemia (peripheral oxygen saturation \[SpO2\] \< 95% at sea level or \< 92% at altitudes \> 1800 meters) OR * Tachypnea (≥ 70 breaths per minute \[bpm\] in infants 0 to 59 days of age and ≥ 60 bpm in infants ≥ 60 days of age).

Counts and percentage of subjects with solicited injection site and systemic reactogenicity within seven days of vaccination.
Day 0 to Day D+180

In Maternal Subjects

Counts and percentage of subjects with unsolicited (local and systemic) adverse events (AE), unscheduled medically-attended adverse events (MAEs), and serious adverse events (SAEs) through delivery and six (6) months thereafter.
Day 0 to Day D+180

In Maternal Subjects

Clinical safety laboratory assessments of select serum chemistry and hematology parameters through delivery.
Screening to Day 14

In Maternal Subjects

Counts and percentage of subjects with post-immunization onset of specific complications of third-trimester pregnancy and delivery
Day 0 to Day 28 - 42

In Maternal Subjects

Counts and percentage of term healthy infants appropriate for gestational age.
Day 28 - 42

In Infant subjects

Neonatal SAEs (including congenital anomalies, respiratory failure, fever/infection, and neonatal death or other adverse events/complications that necessitate extended hospitalization).
Birth to Day 365

In Infant Subjects

Growth and development over one year
Birth to Day Day 365

In Infant Subjects

Counts and proportion of infants with unsolicited adverse events
Birth to Day 365

In Infant Subjects

Counts and proportions of infants with medically-attended RSV lower respiratory tract infection (LRTI), and age of onset of those infections.
Birth to Day 365

In Infant Subjects

Secondary Endpoints

Infants: Number of Participants With RSV LRTI With Severe Hypoxemia (Sp02 <92% at Sea Level or <87% at Altitudes >1800 Meters) or Documented Use of Oxygen by High Flow Nasal Cannula or Other Advanced Respiratory Support Through 90 Days of Life
Delivery to 180 days after delivery
Infants: Percentages of Participants With RSV LRTI With Hospitalization From Delivery
Delivery to 180 days after delivery
Infant: Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs) During the Neonatal Period and Through the First Year of Life
Delivery to 364 days after delivery
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
Treatment Group APLACEBO_COMPARATORFormulation buffer (0.5mL injection)
Treatment GroupACTIVE_COMPARATORRSV F vaccine with adjuvant (0.5mL injection)
Treatment Group BEXPERIMENTALRSV F vaccine with adjuvant (0.5mL injection)

Interventions

NameTypeDescription
RSV F vaccine with adjuvantBIOLOGICAL -
Formulation bufferBIOLOGICAL -
Saline Placebo (0.5mL injection)DRUG -
RSV F vaccine (0.5mL injection)DRUG -
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Eligibility Criteria

Age Range18 Years to 40 Years
SexFEMALE
Healthy VolunteersYes
Study Sites88

Inclusion Criteria: 1. ≥18 and ≤40 years-of-age 2. Singleton pregnancy of 28 to 36 0/7 weeks gestation on the day of planned vaccination * Documentation of gestational age will be based on one of the following composite criteria. (Note: The Investigator was to use the earliest ultrasound data a...

Countries:United StatesArgentinaAustraliaBangladeshChileMexicoNew ZealandPhilippinesSouth AfricaSpainUnited Kingdom
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Frequently asked questions about RSV F vaccine

What is RSV F Vaccine with Aluminum Adjuvant used for?

RSV F Vaccine with Aluminum Adjuvant is an investigational vaccine being studied for the prevention of Respiratory Syncytial Virus (RSV) infections. It is being evaluated in clinical trials for use in pregnant women to protect infants via maternal immunization, as well as in older adults and young children.

Who makes RSV F Vaccine with Aluminum Adjuvant?

RSV F Vaccine with Aluminum Adjuvant is being developed by Novavax, Inc., a biotechnology company traded on the NASDAQ under the ticker symbol NVAX. The vaccine is currently in clinical development and has not yet been approved by regulatory authorities.

What phase is RSV F Vaccine with Aluminum Adjuvant in?

RSV F Vaccine with Aluminum Adjuvant has completed clinical trials in Phase 1, Phase 2, and Phase 3. The most advanced completed study was a Phase 3 trial evaluating maternal immunization to protect infants from RSV. The vaccine remains investigational and is not yet approved.

What clinical trials has RSV F Vaccine with Aluminum Adjuvant been in?

RSV F Vaccine with Aluminum Adjuvant has been studied in four completed clinical trials. These include NCT02247726, a Phase 2 maternal immunization study in pregnant women; NCT02296463, a Phase 1 dose-ranging study in toddlers; NCT02624947, a Phase 3 maternal immunization efficacy trial; and NCT03026348, a Phase 2 study in older adults.

Is RSV F Vaccine with Aluminum Adjuvant the same as other RSV vaccines?

RSV F Vaccine with Aluminum Adjuvant is a specific vaccine formulation developed by Novavax that includes the RSV F protein combined with an aluminum adjuvant. It is distinct from other RSV vaccine candidates that may use different antigens or adjuvant systems, such as Matrix-M1.