Recent Updates
Recently added Catalysts

Varicella Vaccine

Phase 3

Varicella | Monoclonal antibody | Infectious Disease |Sinovac Biotech, Ltd|Last Updated: Jun 12, 2026

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLED
Total Trials1
Total Enrollment642

FDA Designations

No designations recorded

Clinical trial landscape

Varicella Vaccine · 2 trials · 3 indications

Phase 3 2
NCT07473427Immunogenicity and Safety of Varicella Vaccine, Live in Healthy Vietnamese ChildrenVaricella (Chickenpox)
NOT YET_RECRUITING300 Analytics
NCT06314724Immunogenicity and Safety of Varicella Vaccine, Live in Healthy Children Aged 12~15 Months in the PhilippinesVaricella
COMPLETED642 Analytics
PHASE3NOT YET_RECRUITING
Immunogenicity and Safety of Varicella Vaccine, Live in Healthy Vietnamese Children
Varicella (Chickenpox)Unlock trial analytics
PHASE3COMPLETED
Immunogenicity and Safety of Varicella Vaccine, Live in Healthy Children Aged 12~15 Months in the Philippines
VaricellaUnlock trial analytics

Study Endpoints

Primary Endpoints

The seroresponse rate of varicella-zoster virus (VZV) antibodies among susceptible population without varicella immunization history
42 days after vaccination
Seroresponse rate of varicella-zoster virus (VZV) antibody
Day 42 after vaccination

The seroresponse rate of VZV antibodies on Day 42 after vaccination among susceptible population.

Secondary Endpoints

The Geometric Mean Concentration(GMC) of VZV antibodies among susceptible population without varicella immunization history
42 days after vaccination
The Geometric Mean Concentration(GMC) of VZV antibodies in total population
42 days after vaccination
The seropositive rate of VZV antibodies in total population
42 days after vaccination
Unlock Study Endpoints

Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
No vaccination history groupEXPERIMENTALParticipants aged 1-12 years with no vaccination history of varicella-containing vaccine
Vaccination history groupEXPERIMENTALParticipants aged 2-12 years have received 1 dose of varicella vaccine
Varicella vaccine groupEXPERIMENTALParticipants will receive a single dose of investigational varicella vaccine on Day 0.
VarivaxACTIVE_COMPARATORParticipants will receive a single dose of Varivax on Day 0.

Interventions

NameTypeDescription
Varicella VaccineBIOLOGICALVaricella vaccine manufactured by Sinovac
VarivaxBIOLOGICALlyophilized powder,subcutaneous injection
Unlock Study Design Details

Eligibility Criteria

Age Range1 Year to 12 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: 1. Healthy children aged 1-12 years; 2. Vaccination history: * Participants aged 1 year old: no vaccination history with any varicella containing vaccine; * Participants aged 2\~12 years old: no vaccination history with any varicella containing vaccine, or have received 1...

Countries:VietnamPhilippines
Unlock Eligibility Criteria

Frequently asked questions about Varicella Vaccine

What is Varicella Vaccine used for?

Varicella Vaccine is a live vaccine used for the prevention of varicella, commonly known as chickenpox. It is being developed for use in healthy children to provide immunity against the varicella-zoster virus, which causes chickenpox.

Who makes Varicella Vaccine?

Varicella Vaccine is being developed by Sinovac Biotech, Ltd, a biopharmaceutical company. The company is listed on the stock exchange under the ticker symbol SVA.

What phase is Varicella Vaccine in?

Varicella Vaccine is currently in Phase 3 clinical development. It is an investigational vaccine and has not yet been approved by regulatory authorities. Clinical trials are ongoing to evaluate its immunogenicity and safety in healthy children.

What clinical trials is Varicella Vaccine in?

Varicella Vaccine is being studied in two Phase 3 clinical trials. One trial, NCT06314724, has been completed in the Philippines with 642 healthy children aged 12 to 15 months. Another trial, NCT07473427, is planned in Vietnam with 300 healthy children aged 1 year and older.

How does Varicella Vaccine work?

Varicella Vaccine is a live attenuated vaccine that works by stimulating the immune system to produce a protective response against the varicella-zoster virus. This helps the body develop immunity to chickenpox without causing the full disease.