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Inactivated COVID-19 Vaccine

Phase 4

COVID-19 | Vaccine | Infectious Disease |Sinovac Biotech, Ltd|Trials Updated: Feb 7, 2024

Inactivated COVID-19 Vaccine development status

Highest phase Phase 4 (NCT05198336)
Phase scored for SVAPhase 3
Registered trials 8 across 5 sponsors since Jul 2021

Inactivated COVID-19 Vaccine target and mechanism

ModalityVaccine

Also known as CoronaVac

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials2
Total Enrollment11,900

FDA Designations

No designations recorded

Inactivated COVID-19 Vaccine clinical trials

Inactivated COVID-19 Vaccine · 2 trials · 2 indications

Phase 3 1Phase 2 1
NCT04992260Efficacy, Immunogenicity and Safety of COVID-19 Vaccine , Inactivated in Children and AdolescentsCOVID-19
COMPLETED11,349 Analytics
PHASE3COMPLETED
Efficacy, Immunogenicity and Safety of COVID-19 Vaccine , Inactivated in Children and Adolescents
COVID-19Unlock trial analytics

Study Endpoints

Primary Endpoints

Efficacy index-incidence of RT-PCR confirmed symptomatic COVID-19 cases with onset
14 days after the second dose

Incidence of RT-PCR confirmed symptomatic COVID-19 cases with onset at least 14 days after the second dose

Superiority in humoral immunogenicity of the neutralizing antibodies against the Delta and Omicron variants in response to a booster dose of the trivalent vaccine compared to CoronaVac® in adults previously immunized against SARS-CoV-2.
Up until 6 months after intervention

Differences in the humoral immunogenicity (GMT ratio \>1) of the neutralizing antibodies against the Delta and Omicron variants in response to a booster dose of the trivalent vaccine compared to CoronaVac® in adults who have initially received two doses of CoronaVac® and two booster doses with vaccines against SARS-CoV-2 different from CoronaVac® (mRNA or viral vectors (heterologous group)) will be evaluated.

Superiority in humoral immunogenicity of neutralizing antibodies against the Omicron variant in response to a booster dose with the Omicron vaccine when compared with CoronaVac® in adults previously immunized against SARS-CoV-2.
Up until 6 months after intervention

Differences in the humoral immunogenicity (GMT ratio \>1) of the neutralizing antibodies against the Omicron variant generated in response to a booster dose with the Omicron vaccine when compared with CoronaVac® in adults who have initially received two doses of CoronaVac® and two booster doses with vaccines against SARS-CoV-2 different from CoronaVac® (mRNA or viral vectors (heterologous group)) will be evaluated.

Non-inferiority of neutralizing antibodies against the Omicron and Delta variants generated by a booster dose of trivalent vaccine when compared to CoronaVac® in adults previously immunized against SARS-CoV-2 in a heterologous schedule.
Up until 6 months after intervention

Evaluation of the non-inferiority (seroconversion rate ≥5%) of neutralizing antibodies against the Omicron and Delta variants generated by a booster dose of trivalent vaccine when compared to CoronaVac® in adults who have initially received two doses of CoronaVac® and two booster doses with vaccines from other platforms (mRNA or viral vectors (heterologous group)).

Non-inferiority of neutralizing antibodies against the Omicron variant generated by a booster dose with Omicron vaccine when compared with CoronaVac® in adults previously immunized against SARS-CoV-2 in a heterologous schedule.
Up until 6 months after intervention

Evaluation of the non-inferiority (seroconversion rate ≥5%) of neutralizing antibodies against the Omicron variant generated by a booster dose with Omicron vaccine when compared with CoronaVac® in adults who have two doses of CoronaVac® and two booster doses with vaccines from other platforms (mRNA or viral vectors (heterologous group)).

Secondary Endpoints

Efficacy index-incidence of RT-PCR confirmed symptomatic COVID-19 cases with onset
14 days after the first dose
Efficacy index-incidence of RT-PCR confirmed, symptomatic COVID-19 cases with onset in SARS-CoV-2 uninfected participants
14 days after the second dose
Efficacy index-incidence of hospitalization/severe/death caused by COVID-19 with onset
14 days after the second dose
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
Experimental GroupEXPERIMENTALsubjects will receive two doses of inactivated COVID-19 vaccine on day 0 and day 28.
Control GroupPLACEBO_COMPARATORsubjects will receive two doses of placebo on day 0 and day 28.
Heterologous group receiving CoronaVac®ACTIVE_COMPARATORGeneral population that received two doses of CoronaVac® as a primary schedule of vaccination and two booster doses as part of the national vaccination schedule with mRNA or viral vector-based vaccines; and who receive a booster dose of CoronaVac®
Heterologous group receiving Omicron vaccineEXPERIMENTALGeneral population that received two doses of CoronaVac® as a primary schedule of vaccination and two booster doses as part of the national vaccination schedule with mRNA or viral vector-based vaccines; and who receive a booster dose of Omicron vaccine
Heterologous group receiving a trivalent vaccineEXPERIMENTALGeneral population that received two doses of CoronaVac® as a primary schedule of vaccination and two booster doses as part of the national vaccination schedule with mRNA or viral vector-based vaccines; and who receive a booster dose of trivalent vaccine
Homologous group receiving Omicron vaccineEXPERIMENTALParticipants of the CoronaVac03CL study who have received the primary regimen and two booster doses with CoronaVac® vaccine; and who receive a booster dose of Omicron vaccine
Homologous group receiving a trivalent vaccineEXPERIMENTALParticipants of the CoronaVac03CL study who have received the primary regimen and two booster doses with CoronaVac® vaccine and who receive a booster dose of trivalent vaccine

Interventions

NameTypeDescription
Inactivated COVID-19 VaccineBIOLOGICALThe inactivated COVID-19 vaccine was manufactured by Sinovac Research\& Development Co., Ltd..600SU Inactivated SARS-COV-2 virus in 0·5 mL of aluminium hydroxide solution per injection
Controlled vaccineBIOLOGICALThe placebo was manufactured by Sinovac Research\& Development Co., Ltd.The composition is aluminium hydroxide,The appearance of the placebo is consistent with the vaccine, which is a milky-white suspension.
CoronaVac®BIOLOGICALThe active ingredient is the SARS-CoV-2 virus (CZ02 strain, ancestral) grown in Vero cells and inactivated, in aluminum hydroxide. The vaccine is preservative-free, and it is packed in pre-load syringes (0.5 mL) with 600 SU/0.5mL of inactivated SARS-CoV-2.
Omicron VaccineBIOLOGICALAn experimental intervention consisting of a booster dose of an inactivated Omicron variant vaccine. The active ingredient is the SARS-CoV-2 virus (Omicron variant) grown in Vero cells and inactivated, in aluminum hydroxide. The vaccine is preservative-free, packed in a pre-load syringe, and contains one dose (0.5mL) of 1200 SU of inactivated SARS-CoV-2 Omicron variant.
Trivalent VaccineBIOLOGICALAn experimental intervention consisting of a booster dose of an inactivated trivalent (CZ02 strain, ancestral, Delta, and Omicron variants) variant vaccine. The active ingredient is the SARS-CoV-2 virus (CZ02 strain, ancestral, Delta, and Omicron variants) grown in Vero cells and inactivated, in aluminum hydroxide. The vaccine is preservative-free, and it is packed in a pre-load syringe containing one dose (0.5mL) (1200 SU of inactivated SARS-CoV-2 WT, 1200 SU of inactivated SARS-CoV-2 Delta variant, and 1200 SU of inactivated SARS-CoV-2 Omicron variant).
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Eligibility Criteria

Age Range6 Months to 17 Years
SexALL
Healthy VolunteersYes
Study Sites38

Inclusion Criteria: * Healthy children and adolescents aged 6 months to 17 years; * The participants and/or their guardians are able to understand and sign the informed consent voluntarily (in accordance with the local regulations); * Able to comply with study procedures based on the assessment of ...

Countries:ChileMalaysiaPhilippinesSouth Africa
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Frequently asked questions about Inactivated COVID-19 Vaccine

What is the Inactivated COVID-19 Vaccine?

The Inactivated COVID-19 Vaccine is an investigational vaccine developed by Sinovac Biotech, Ltd for the prevention of COVID-19. It is a vaccine modality that uses inactivated virus and is in Phase 3 clinical development. It is not described as approved.

What is the Inactivated COVID-19 Vaccine used for?

The Inactivated COVID-19 Vaccine is being developed for the prevention of COVID-19, an infectious disease. Its clinical program has studied use in children and adolescents, with trial participants as young as 6 months of age.

Who makes the Inactivated COVID-19 Vaccine?

The Inactivated COVID-19 Vaccine is developed by Sinovac Biotech, Ltd, which trades under the ticker SVA. Sinovac is the sponsor of the clinical program for this inactivated vaccine candidate.

What phase is the Inactivated COVID-19 Vaccine in?

The Inactivated COVID-19 Vaccine is in Phase 3 clinical development. One Phase 3 trial has been completed, and no active trials are ongoing. It is an investigational vaccine and is not described as FDA approved.

What clinical trials is the Inactivated COVID-19 Vaccine in?

The Inactivated COVID-19 Vaccine has been studied in one completed Phase 3 trial, NCT04992260, titled Efficacy, Immunogenicity and Safety of COVID-19 Vaccine, Inactivated in Children and Adolescents. It enrolled 11,349 participants across Chile, Malaysia, the Philippines, and South Africa.

How was the Phase 3 trial of the Inactivated COVID-19 Vaccine designed?

The Phase 3 trial NCT04992260 was a randomized, double-blind, placebo-controlled study of the Inactivated COVID-19 Vaccine in healthy volunteers. It enrolled 11,349 participants of all sexes, with a minimum age of 6 months, and has been completed.