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CompletedNCT05499351Updated Aug 12, 2022

A Study of Booster Immunization With COVID-19 Vaccine,Inactivated Co -Administration With Influenza Vaccine and Pneumococcal Polysaccharide Vaccine

A Phase 4 interventional study of Adult group in immunogenicity and safety study of combined immunization and Elderly group in immunogenicity and safety study of combined immunization in COVID-19, sponsored by Sinovac Biotech Co., Ltd. Completed at 1 site in China. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-08-12.

Sponsored by Sinovac Biotech Co., Ltd · Phase 4, Interventional, and Prevention

From the registry’s dates

  • Registered 9 months after the study started (first participant enrolled Oct 2021, registered Aug 2022).
Phase
Phase 4
Study type
Interventional
Enrollment
3,000
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This study is a single center , randomized ,controlled and open-label phase Ⅳclinical trial of the booster immunization with the third dose of inactivated COVID-19 vaccine(CoronaVac)manufactured by Sinovac Research \& Development Co.,Ltd. The purpose of this study is to evaluate the immunogenicity and safety of the third dose of COVID-19 vaccine,inactivated (Vero Cell) co-administration with influenza vaccine and pneumococcal polysaccharide vaccine in healthy population aged 18 years and older.

Read the detailed description

This study is a single center , randomized ,controlled and open-label phase Ⅳclinical trial in healthy adult aged 18 years and older. The purpose of this study is to evaluate the immunogenicity and safety of the third dose of COVID-19 vaccine,inactivated (Vero Cell) co-administration with influenza vaccine and pneumococcal polysaccharide vaccine.The COVID-19 vaccine was manufactured by Sinovac Research \&Development Co., Ltd,and the quadrivalent influenza vaccine and 23-valent pneumococcal polysaccharide vaccine(PPV23) were manufactured by Sinovac Biotech Co.A total of 3000 subjects will be enrolled, with 300 aged 18\~59years(adult group) and 300 aged 60 years and above(adult group) in the section of immunogenicity and safety of combined immunization ,with 1200 aged 18\~59 years(adult group) and 1200 aged 60 years and above(elderly Group) in the section of safety observation study of combined immunization.Each age group will be randomly divided into 3 subgroups of 100 people per group, each subject will receive 1 dose of COVID-19 vaccine, 1 dose of influenza vaccine and 1 dose of pneumonia vaccine in the section of immunogenicity and safety of combined immunization and each age group will be randomly divided into 2 subgroups of 600 people per group, each subject will receive 1 dose of COVID-19 vaccine, 1 dose of influenza vaccine and 1 dose of pneumonia vaccine in the section of safety observation study of combined immunization.

02

Conditions studied

  • COVID-19

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03

In context

COVID-19

7,640 studies on the registry are indexed under COVID-19; 488 are open to participants now.

This study's enrollment of 3,000 is above the median of 100 across 4,099 interventional studies indexed under COVID-19.

Browse COVID-19 studies →

Lead sponsor

Sinovac Biotech Co., Ltd is the lead sponsor of 89 studies on the registry; 18 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Healthy adults aged 18 years and above;
  • Have been received two doses of inactivated SARS-CoV-2 vaccine(CoronaVac)manufactured by Sinovac Research \& Development Co., Ltd at an interval of 6 months or more;
  • Participants should be capable of understanding the informed consent form, and such form should be signed prior to enrolment ;
  • Proven legal identity;

Exclusion criteria

Exclusion Criteria:

  • History of SARS-CoV-2 infection;
  • Have been received two doses of inactivated SARS-CoV-2 vaccine(CoronaVac)manufactured by Sinovac Research \& Development Co., Ltd at an interval of less than 6 months;
  • Have received received any circulating seasonal influenza vaccine;
  • Have received any pneumococcal vaccine within 5 years;
  • History of asthma, history of allergy to the vaccine or vaccine components, or serious adverse reactions to the vaccine, such as urticaria, dyspnea, and angioedema;
  • History of uncontrolled epilepsy and other serious neurological diseases such as transverse myelitis, Guillain-Barre syndrome, demyelinating diseases;
  • History of fever at the time of vaccination, or acute onset of chronic disease, or severe uncontrolled chronic disease, or acute disease;
  • Already pregnant (including a positive urine pregnancy test) or are breastfeeding, planning to get pregnant within 3 months;
  • Receipt of other investigational drugs in the past 30 days;
  • Receipt of attenuated live vaccines in the past 14 days;
  • Receipt of inactivated or subunit vaccines in the past 7 days;
  • According to the investigator's judgment, the subject has any other factors that are not suitable for participating in the clinical trial.
05

Study design

Phase
Phase 4
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
3,000 participants (actual)

Study arms

  • Experimental
    Adult group in immunogenicity and safety study of combined immunization

    300 participants will be randomly divided into 3 subgroups of 100 people per group, each subject will receive 1 dose of COVID-19 vaccine, 1 dose of influenza vaccine and 1 dose of pneumonia vaccine

    Biological: Adult group in immunogenicity and safety study of combined immunization

  • Experimental
    Elderly group in immunogenicity and safety study of combined immunization

    300 participants will be randomly divided into 3 subgroups of 100 people per group, each subject will receive 1 dose of COVID-19 vaccine, 1 dose of influenza vaccine and 1 dose of pneumonia vaccine

    Biological: Elderly group in immunogenicity and safety study of combined immunization

  • Experimental
    Adult group in safety observation study of combined immunization

    1200 participants will be randomly divided into 2 subgroups of 600 people per group, each subject will receive 1 dose of COVID-19 vaccine, 1 dose of influenza vaccine and 1 dose of pneumonia vaccine

    Biological: Adult group in safety observation study of combined immunization

  • Experimental
    Elderly group in safety observation study of combined immunization

    1200 participants will be randomly divided into 2 subgroups of 600 people per group, each subject will receive 1 dose of COVID-19 vaccine, 1 dose of influenza vaccine and 1 dose of pneumonia vaccine

    Biological: Elderly group in safety observation study of combined immunization

Interventions

  • BiologicalAdult group in immunogenicity and safety study of combined immunization

    The COVID-19 vaccine was manufactured by Sinovac Research \& Development Co., Ltd,and the quadrivalent influenza vaccine and the 23-valent pneumococcal polysaccharide vaccine(PPV23) were manufactured by Sinovac Biotech Co.The COVID-19 vaccine:600SU inactivated virus in 0.5 mL of aluminium hydroxide solution per injection;The quadrivalent influenza vaccine:15ug hemagglutinin (HA) of each of the four influenza strains in 0.5 mL of sodium chloride, disodium hydrogen phosphate, sodium dihydrogen phosphate per injection;PPV23:capsular polysaccharides of 23 serotypes of pneumococcus in 0.5 mL of Sodium chloride, disodium hydrogen phosphate, sodium dihydrogen phosphate per injection.

  • BiologicalElderly group in immunogenicity and safety study of combined immunization

    The COVID-19 vaccine was manufactured by Sinovac Research \& Development Co., Ltd,and the quadrivalent influenza vaccine and the 23-valent pneumococcal polysaccharide vaccine(PPV23) were manufactured by Sinovac Biotech Co.The COVID-19 vaccine:600SU inactivated virus in 0.5 mL of aluminium hydroxide solution per injection;The quadrivalent influenza vaccine:15ug hemagglutinin (HA) of each of the four influenza strains in 0.5 mL of sodium chloride, disodium hydrogen phosphate, sodium dihydrogen phosphate per injection;PPV23:capsular polysaccharides of 23 serotypes of pneumococcus in 0.5 mL of Sodium chloride, disodium hydrogen phosphate, sodium dihydrogen phosphate per injection.

  • BiologicalAdult group in safety observation study of combined immunization

    The COVID-19 vaccine was manufactured by Sinovac Research \& Development Co., Ltd,and the quadrivalent influenza vaccine and the 23-valent pneumococcal polysaccharide vaccine(PPV23) were manufactured by Sinovac Biotech Co.The COVID-19 vaccine:600SU inactivated virus in 0.5 mL of aluminium hydroxide solution per injection;The quadrivalent influenza vaccine:15ug hemagglutinin (HA) of each of the four influenza strains in 0.5 mL of sodium chloride, disodium hydrogen phosphate, sodium dihydrogen phosphate per injection;PPV23:capsular polysaccharides of 23 serotypes of pneumococcus in 0.5 mL of Sodium chloride, disodium hydrogen phosphate, sodium dihydrogen phosphate per injection.

  • BiologicalElderly group in safety observation study of combined immunization

    The COVID-19 vaccine was manufactured by Sinovac Research \& Development Co., Ltd,and the quadrivalent influenza vaccine and the 23-valent pneumococcal polysaccharide vaccine(PPV23) were manufactured by Sinovac Biotech Co.The COVID-19 vaccine:600SU inactivated virus in 0.5 mL of aluminium hydroxide solution per injection;The quadrivalent influenza vaccine:15ug hemagglutinin (HA) of each of the four influenza strains in 0.5 mL of sodium chloride, disodium hydrogen phosphate, sodium dihydrogen phosphate per injection;PPV23:capsular polysaccharides of 23 serotypes of pneumococcus in 0.5 mL of Sodium chloride, disodium hydrogen phosphate, sodium dihydrogen phosphate per injection.

06

What researchers measure

Primary outcomes

  1. Immunogenicity index of seroconversion rate of the neutralizing antibody

    Seroconversion rate of the neutralizing antibody to live SARS-CoV-2 28 days after the booster immunization with the third single dose of COVID-19 vaccine

    Time frame: 28 days after the booster immunization with the third dose of COVID-19 vaccine

Secondary outcomes

  1. Immunogenicity index of seropositivity rate of the neutralizing antibody

    Seropositivity rate of the neutralizing antibody to live SARS-CoV-2 28 days after combined immunization

    Time frame: 28 days after combined immunization

  2. Immunogenicity index of GMT of the neutralizing antibody

    GMT of the neutralizing antibody to live SARS-CoV-2 28 days after combined immunization

    Time frame: 28 days after combined immunization

  3. Immunogenicity index of GMI of the neutralizing antibody

    GMI of the neutralizing antibody to live SARS-CoV-2 28 days after combined immunization.

    Time frame: 28 days after combined immunization

  4. Immunogenicity index of seroconversion rate of 23 pneumonia antibodies

    Seroconversion rate of 23 pneumonia antibodies 28 days after single and combined vaccination of 23 valent pneumonia vaccine.

    Time frame: 28 days after single and combined vaccination of 23 valent pneumonia vaccine

  5. Immunogenicity index of GMC increase of 23 pneumonia antibodies

    GMC increase of 23 pneumonia antibodies 28 days after single and combined vaccination of 23 valent pneumonia vaccine

    Time frame: 28 days after single and combined vaccination of 23 valent pneumonia vaccine

  6. Immunogenicity index of seroconversion rate of 4 influenza antibodies

    Seroconversion rate of 4 influenza antibodies 28 days after single and combined vaccination

    Time frame: 28 days after single and combined vaccination

  7. Immunogenicity index of GMT of 4 influenza antibodies

    GMT of 4 influenza antibodies 28 days after single and combined vaccination

    Time frame: 28 days after single and combined vaccination

  8. Immunogenicity index of GMI of 4 influenza antibodies

    GMI of 4 influenza antibodies 28 days after single and combined vaccination

    Time frame: 28 days after single and combined vaccination

  9. Immunogenicity index of protection rate of 4 influenza antibodies

    Protection rate of 4 influenza antibodies 28 days after single and combined vaccination

    Time frame: 28 days after single and combined vaccination

07

Study locations

1 site
  • Beijing Centers for Diseases Control and Prevention
    Beijing, 100013, China
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 12, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05499351
Lead sponsor
Sinovac Biotech Co., Ltd
Responsible party
Sponsor
First posted
Aug 12, 2022
Start date
Oct 15, 2021
Primary completion
Dec 5, 2021
Completion
May 5, 2022
Last update
Aug 12, 2022

Study contacts

Jiang Wu, Master
principal investigator · Beijing Center for Disease Control and Prevention

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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