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Sinovac PCV24 formulation 1

Phase 1

Pneumococcal Infectious Disease | Monoclonal antibody | Infectious Disease |Sinovac Biotech, Ltd|Last Updated: Jan 28, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLED
Total Trials2
Total Enrollment289

FDA Designations

No designations recorded

Clinical trial landscape

Sinovac PCV24 formulation 1 · 2 trials · 1 indication

Phase 1 2
NCT06550830Clinical Trial of PCV24 in Children Aged 2-17 YearsPneumococcal Infectious Disease
COMPLETED119 Analytics
NCT06474377Clinical Trial of PCV24 in AdultsPneumococcal Infectious Disease
COMPLETED170 Analytics
PHASE1COMPLETED
Clinical Trial of PCV24 in Children Aged 2-17 Years
Pneumococcal Infectious DiseaseUnlock trial analytics
PHASE1COMPLETED
Clinical Trial of PCV24 in Adults
Pneumococcal Infectious DiseaseUnlock trial analytics

Study Endpoints

Primary Endpoints

Incidence of adverse reactions
0-30 days after vaccination

Incidence of adverse reactions within 30 days after vaccination

Secondary Endpoints

Incidence of adverse reactions
0-7 days after vaccination
Incidence of serious adverse events (SAE)
0-6 months after vaccination
Incidence of clinically significant abnormality in laboratory examination tests
0-3 days after vaccination
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
Experimental group 1EXPERIMENTAL12 participants aged 6-17 years and 30 participants aged 2-5 years will be randomized to receive Sinovac PCV24 formulation 1. Route of administration is intramuscular injection at deltoid muscle of upper arm. Immunization schedule is 1 dose.
Experimental group 2EXPERIMENTAL12 participants aged 6-17 years and 30 participants aged 2-5 years will be randomized to receive Sinovac PCV24 formulation 2. Route of administration is intramuscular injection at deltoid muscle of upper arm. Immunization schedule is 1 dose.
Active control groupACTIVE_COMPARATOR30 participants aged 2-5 years will be randomized to receive Prevenar13®. Route of administration is intramuscular injection at deltoid muscle of upper arm. Immunization schedule is 1 dose.
Experimental: Sinovac PCV24 formulation 1EXPERIMENTAL48 participants will be randomized to receive Sinovac PCV24 formulation 1. Route of administration is intramuscular injection at deltoid muscle of upper arm. Immunization schedule is 1 dose.
Experimental: Sinovac PCV24 formulation 2EXPERIMENTAL48 participants will be randomized to receive Sinovac PCV24 formulation 2. Route of administration is intramuscular injection at deltoid muscle of upper arm. Immunization schedule is 1 dose.
Active control: Pneumovax®ACTIVE_COMPARATOR48 participants will be randomized to receive Pneumovax®. Route of administration is intramuscular injection at deltoid muscle of upper arm. Immunization schedule is 1 dose.
Placebo: Normal salinePLACEBO_COMPARATOR24 participants will be randomized to receive placebo. Route of administration is intramuscular injection at deltoid muscle of upper arm. Immunization schedule is 1 dose.

Interventions

NameTypeDescription
Sinovac PCV24 formulation 1BIOLOGICALOne dose of Sinovac PCV24 formulation 1(0.5mL)
Sinovac PCV24 formulation 2BIOLOGICALOne dose of Sinovac PCV24 formulation 2(0.5mL)
Prevenar13®BIOLOGICALOne dose of PCV13 manufactured by Pfizer
Pneumovax®BIOLOGICALOne dose of Pneumovax® (0.5 mL) contains 1, 2, 3, 4, 5, 6B, 7F, 8, 9N, 9V, 10A, 11A, 12F, 14, 15B, 17F, 18C, 19A, 19F, 20, 22F, 23F and 33F saccharides.
PlaceboBIOLOGICAL0.5 mL of 0.9%NaCl solution (normal saline)
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Eligibility Criteria

Age Range2 Years to 17 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: 1. Healthy volunteers who are aged 2-17 years; 2. Participants and their guardians provide legal proof of identity, as well as vaccination record (for children aged 2-5 years); 3. Participants' guardians understand and voluntarily sign the informed consent form; participants age...

Countries:China
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Frequently asked questions about Sinovac PCV24 formulation 1

What is Sinovac PCV24 formulation 1 used for?

Sinovac PCV24 formulation 1 is an investigational pneumococcal conjugate vaccine being developed for the prevention of pneumococcal infectious disease. It is currently in Phase 1 clinical development and has not been approved by regulatory authorities. The vaccine is designed to protect against infections caused by Streptococcus pneumoniae bacteria.

Who makes Sinovac PCV24 formulation 1?

Sinovac PCV24 formulation 1 is being developed by Sinovac Biotech, Ltd, a biopharmaceutical company traded on the NASDAQ under the ticker symbol SVA. The company is conducting clinical trials for this vaccine candidate in China.

What phase is Sinovac PCV24 formulation 1 in?

Sinovac PCV24 formulation 1 is in Phase 1 clinical development. Two Phase 1 trials have been completed, one in adults and one in children aged 2-17 years. The vaccine remains investigational and has not received regulatory approval for commercial use.

What clinical trials is Sinovac PCV24 formulation 1 in?

Sinovac PCV24 formulation 1 has completed two Phase 1 clinical trials. NCT06474377 enrolled 170 healthy adults aged 18 years and older in China, and NCT06550830 enrolled 119 healthy children aged 2-17 years in China. Both trials were randomized, double-blind, and active-controlled studies for pneumococcal infectious disease.

How does Sinovac PCV24 formulation 1 work?

Sinovac PCV24 formulation 1 is a pneumococcal conjugate vaccine designed to stimulate the immune system to produce antibodies against Streptococcus pneumoniae. The vaccine is intended to prevent pneumococcal infectious disease by inducing protective immunity against multiple pneumococcal serotypes.