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parainfluenza virus type 3 vaccine

Phase 1

Respiratory Syncytial Virus Infection | Vaccine | Infectious Disease |Sanofi|Trials Updated: Apr 23, 2026

parainfluenza virus type 3 vaccine target and mechanism

ModalityVaccine

Also known as parainfluenza virus type 3 vaccine (PIV3)

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindCONTROLLED
Total Trials1
Total Enrollment390

FDA Designations

No designations recorded

parainfluenza virus type 3 vaccine clinical trials

parainfluenza virus type 3 vaccine · 1 trial · 3 indications

Phase 1 1
NCT06604767Study of a Respiratory Syncytial Virus/Human Metapneumovirus/Parainfluenza Virus Type 3 Vaccine Candidate in Adults Aged 60 Years and OlderRespiratory Syncytial Virus Infection
COMPLETED390 Analytics
PHASE1COMPLETED
Study of a Respiratory Syncytial Virus/Human Metapneumovirus/Parainfluenza Virus Type 3 Vaccine Candidate in Adults Aged 60 Years and Older
Respiratory Syncytial Virus InfectionUnlock trial analytics

Study Endpoints

Primary Endpoints

Presence of unsolicited systemic adverse events (AEs) reported in the 30 minutes after each vaccination
Within 30 minutes after each vaccination

Number of participants experiencing immediate unsolicited systemic AEs

Presence of solicited administration site reactions within 7 days after vaccination
Within 7 days after vaccination

Number of participants reporting: \- injection site reactions: pain, erythema and swelling

Presence of solicited systemic reactions within 7 days after vaccination
Within 7 days after vaccination

Number of participants reporting: * systemic reactions: fever, headache, fatigue, myalgia, arthralgia and chills

Presence of unsolicited AEs within 28 days after vaccination
Within 28 days after vaccination

Number of participants experiencing unsolicited AEs

Presence of serious adverse events (SAEs)
Within 6 months after vaccination

Number of participants experiencing SAEs regardless of causality

Presence of adverse events of special interest (AESIs)
Within 6 months after vaccination

Number of participants experiencing AESIs regardless of causality

Presence of related SAEs throughout the study
Throughout the study, approximately 12 months

Number of participants experiencing related SAEs regardless of causality

Presence of related AESIs throughout the study
Throughout the study, approximately 12 months

Number of participants experiencing related AESIs regardless of causality

Presence of related fatal SAEs throughout the study
Throughout the study, approximately 12 months

Number of participants experiencing related fatal SAEs regardless of causality

Presence of out-of-range biological test results (including shift from baseline values)
Within 7 days after vaccination

Number of participants with biological safety assessment values out of normal range (as per the laboratory performing the test, including shift from baseline values)

Secondary Endpoints

RSV A serum neutralizing antibody (nAb) titers at pre-vaccination (Day 01) and post-vaccination (Day 29) in the RSV/hMPV +/- PIV3 and RSV vaccines
At Day 01 and Day 29
RSV B serum nAb titers at pre-vaccination (Day 01) and post-vaccination (Day 29) in the RSV/hMPV +/- PIV3 and RSV vaccines
At Day 01 and Day 29
hMPV A serum nAb titers at pre-vaccination (Day 01) and post-vaccination (Day 29) in the RSV/hMPV +/- PIV3 vaccines
At Day 01 and Day 29
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
PIV3 Dose 1EXPERIMENTALParticipants will receive a single intramuscular (IM) injection at Day 1
PIV3 Dose 2EXPERIMENTALParticipants will receive a single intramuscular (IM) injection at Day 1
PIV3 Dose 3EXPERIMENTALParticipants will receive a single intramuscular (IM) injection at Day 1
PIV3 Dose 4EXPERIMENTALParticipants will receive a single intramuscular (IM) injection at Day 1
RSV/hMPV /PIV3 Formulation 1EXPERIMENTALParticipants will receive a single intramuscular (IM) injection at Day 1
RSV/hMPV Formulation 1EXPERIMENTALParticipants will receive a single intramuscular (IM) injection at Day 1
RSV/hMPV Formulation 2EXPERIMENTALParticipants will receive a single intramuscular (IM) injection at Day 1
RSV vaccine 1EXPERIMENTALParticipants will receive a single intramuscular (IM) injection at Day 1
RSV vaccine 2EXPERIMENTALParticipants will receive a single intramuscular (IM) injection at Day 1

Interventions

NameTypeDescription
parainfluenza virus type 3 vaccine (PIV3)BIOLOGICALPharmaceutical form:Frozen liquid solution -Route of administration:Intramuscular
RSV/hMPV/PIV3 vaccineBIOLOGICALPharmaceutical form:Frozen liquid solution-Route of administration:Intramuscular
RSV/hMPV vaccineBIOLOGICALPharmaceutical form:Frozen liquid solution-Route of administration:Intramuscular
RSV vaccine 1BIOLOGICALPharmaceutical form:Suspension for injection-Route of administration:Intramuscular
RSV vaccine 2BIOLOGICALPharmaceutical form:Frozen liquid solution-Route of administration:Intramuscular
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Eligibility Criteria

Age Range60 Years to N/A
SexALL
Healthy VolunteersYes
Study Sites8

Inclusion Criteria: * Aged 60 years or older on the day of inclusion (means from the means from the day of the 60th birthday). * Informed consent form (ICF) has been signed and dated * A female participant is eligible to participate if she is of non-childbearing potential. To be considered of non-c...

Countries:Australia
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Frequently asked questions about parainfluenza virus type 3 vaccine

What is the parainfluenza virus type 3 vaccine?

The parainfluenza virus type 3 vaccine is an investigational vaccine developed by Sanofi that targets respiratory syncytial virus infection. It is a Phase 1 candidate studied in adults aged 60 years and older. The vaccine candidate also covers human metapneumovirus and parainfluenza virus type 3 in a single formulation.

What is the parainfluenza virus type 3 vaccine used for?

The parainfluenza virus type 3 vaccine is being studied for the prevention of respiratory syncytial virus infection, along with metapneumovirus infection and parainfluenzae virus infection. It is designed for use in adults aged 60 years and older. It remains investigational and has not been approved for use.

Who makes the parainfluenza virus type 3 vaccine?

Sanofi, which trades under the ticker SNY, is the developer of the parainfluenza virus type 3 vaccine. The company is studying the candidate in older adults as part of its vaccine pipeline. Sanofi holds the program and conducted the Phase 1 trial in Australia.

What phase is the parainfluenza virus type 3 vaccine in?

The parainfluenza virus type 3 vaccine is in Phase 1 development. Its single clinical trial has been completed, and no trials are currently active. The candidate is investigational and has not been approved by the FDA or any other regulator based on the available information.

What clinical trials is the parainfluenza virus type 3 vaccine in?

The parainfluenza virus type 3 vaccine has been studied in one clinical trial, NCT06604767, titled Study of a Respiratory Syncytial Virus/Human Metapneumovirus/Parainfluenza Virus Type 3 Vaccine Candidate in Adults Aged 60 Years and Older. The Phase 1 trial enrolled 390 participants in Australia, was randomized, double-blind, and controlled, and is now completed.

Is the parainfluenza virus type 3 vaccine the same as PIV3?

Yes, the parainfluenza virus type 3 vaccine is also known as parainfluenza virus type 3 vaccine (PIV3). PIV3 is the abbreviated name used for the same Sanofi vaccine candidate. Both names refer to the same Phase 1 investigational product studied in adults aged 60 years and older.