NCT05365724

Brief Summary

This is a non-randomized, open-label, externally controlled study to evaluate the safety and immnunogenicity of the Omicron COVID-19 Vaccine (Vero Cell), Inactivated in population aged 18 years old and above with no vaccination history of the COVID-19 vaccine. 200 health subjects will be recruited in this study, including 150 aged 18-59 years old and 50 aged 60 years old and above. All subjects will be received 2 doses of Omicron COVID-19 Vaccine (Vero Cell), Inactivated according to the immunization schedule of 0, 21-28 days. The change in neutralizing antibody level at 28 days after the second dose was used to determine whether to receive a further booster dose for ≥3 months. The occurrence of adverse events within 28 days and serious adverse events within 6 months after vaccination will be observed. In addition, blood samples will be collected on Day 0 before vaccination,Day 14 after dose 1, before dose 2 and on day 14, 28 and month 3, 6, 9, 12 after dose 2. Serum antibody levels, cellular immune responses will be analyzed.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
280

participants targeted

Target at P75+ for phase_1 covid19

Timeline
Completed

Started May 2022

Typical duration for phase_1 covid19

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

April 30, 2022

Completed
1 day until next milestone

Study Start

First participant enrolled

May 1, 2022

Completed
8 days until next milestone

First Posted

Study publicly available on registry

May 9, 2022

Completed
1.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 1, 2023

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

October 1, 2023

Completed
Last Updated

June 18, 2023

Status Verified

June 1, 2023

Enrollment Period

1.4 years

First QC Date

April 30, 2022

Last Update Submit

June 15, 2023

Conditions

Keywords

COVID-19Omicroninactivated vaccine

Outcome Measures

Primary Outcomes (3)

  • The Geometric Mean Titer (GMT) of neutralizing antibody against Omicron SARS-CoV-2

    On Day 28 after Dose 2

  • The four-fold increase rate of neutralizing antibody against Omicron SARS-CoV-2

    On Day 28 after Dose 2

  • Incidence of adverse reactions

    within 28 days after vaccination

Secondary Outcomes (6)

  • The Geometric Mean Titer (GMT) of neutralizing antibody against Omicron SARS-CoV-2

    On Day 14 after Dose 2

  • The four-fold increase rate of neutralizing antibody against Omicron SARS-CoV-2

    On Day 14 after Dose 2

  • The incidence of any adverse reactions/events

    28 days after each immunization

  • The incidence of serious adverse events (SAE) and adverse events special interest (AESI)

    From the beginning of the first dose to 12 months after the second immunization

  • The neutralizing antibody GMT

    on 3rd month, 6th month, 9th month, and 12th month after Dose 2

  • +1 more secondary outcomes

Other Outcomes (4)

  • The neutralizing antibody GMT to different variants of SARS-CoV-2

    On Day 28 after Dose 2

  • The IgG antibody lever against Omicron SARS-CoV-2

    On Day 14 and 28 after Dose 2

  • The incidence of COVID-19 cases

    From 14 day after Dose 2

  • +1 more other outcomes

Study Arms (2)

subjects aged 18-59 years old

EXPERIMENTAL
Biological: Omicron COVID-19 Vaccine (Vero Cell), Inactivated

subjects aged 60 years old and above

EXPERIMENTAL
Biological: Omicron COVID-19 Vaccine (Vero Cell), Inactivated

Interventions

2 doses of vaccine according to the immunization schedule of 0, 21-28 days

subjects aged 18-59 years oldsubjects aged 60 years old and above

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Healthy subjects aged 18 years old and above.
  • By asking for medical history and physical examination, the investigator judged - that the health condition is well.
  • During the whole follow-up period of the study, be able and willing to complete the whole prescribed study plan.
  • With self-ability to understand the study procedures, the informed consent \& voluntarily sign an informed consent form and be able to comply with the requirements of the clinical study protocol.

You may not qualify if:

  • Confirmed or suspected cases of SARS-CoV-2 Infection.
  • Has a history of SARS, MERS, SARS-CoV-2 infection (self-report, on-site inquiry).
  • Has received COVID-19 vaccine (include mRNA, recombinant protein vaccines, vector vaccines, inactivated vaccines, etc.)
  • Axillary body temperature \> 37.3 ℃ before vaccination
  • Previous severe allergic reactions to vaccination (such as acute allergic reactions, urticaria, dyspnea, angioneurotic edema or abdominal pain) or allergy to known ingredients of inactivated SARS-CoV-2 vaccine have occurred (self-report, on-site inquiry).
  • History of hospital-diagnosed thrombocytopenia or other coagulation disorder
  • Known immunological impairment or low level with hospital diagnosis
  • History of uncontrolled epilepsy, other progressive neurological disorders, or Guillain-Barre syndrome (self-report, on-site inquiry).
  • Known or suspected concomitant serious diseases include: respiratory disease, acute infection or active chronic disease, liver and kidney disease, severe diabetes, malignant tumor, infection or allergic skin disease, HIV infection.
  • Severe cardiovascular disease (cardiopulmonary failure, uncontrolled hypertension, etc.) diagnosed by the hospital, active chronic respiratory disease
  • Live attenuated vaccine is inoculated within 1 month before this vaccination
  • other vaccines are inoculated within 14 days before this vaccination.
  • be participating in or plan to participate in other vaccine clinical trials during this study.
  • Contraindications related to vaccination as considered by other investigators.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Shulan (hangzhou) Hospital

Hangzhou, Zhejiang, China

Location

MeSH Terms

Conditions

COVID-19

Condition Hierarchy (Ancestors)

Pneumonia, ViralPneumoniaRespiratory Tract InfectionsInfectionsVirus DiseasesCoronavirus InfectionsCoronaviridae InfectionsNidovirales InfectionsRNA Virus InfectionsLung DiseasesRespiratory Tract Diseases

Study Officials

  • Lanjuan Li

    Shulan (Hangzhou) Hospital

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 1
Allocation
NON RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

April 30, 2022

First Posted

May 9, 2022

Study Start

May 1, 2022

Primary Completion

October 1, 2023

Study Completion

October 1, 2023

Last Updated

June 18, 2023

Record last verified: 2023-06

Data Sharing

IPD Sharing
Will not share

Locations