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CompletedNCT06763887Updated Jan 8, 2025

Evaluation of Immunogenicity of COVID-19 Vaccine in Chinese Population

An observational study in COVID, sponsored by Xijing Hospital. Completed at 1 site in China. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2025-01-08.

Sponsored by Xijing Hospital · Observational

Study type
Observational
Model
Cohort
Time perspective
Cross-sectional
Enrollment
100
Ages
18 Years to 75 Years
Sex
All
01

Study summary

The purpose of this study is to evaluate the immunogenicity and immune protection of COVID-19, especially the recently prevalent strains, against the background of current immunization in Chinese population

02

Conditions studied

  • COVID
03

In context

Lead sponsor

Xijing Hospital is the lead sponsor of 465 studies on the registry; 157 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

People infected with COVID-19

Inclusion criteria

  1. He was infected with COVID-19 from November to December 2022;
  2. Have not been infected with COVID-19 (the subject said that he was not infected and signed the informed consent form);
  3. Those who agree and sign the informed consent form.

Exclusion criteria

Exclusion Criteria:

  1. Missing or incomplete questionnaires that affect research results;
  2. Individuals with combined dysfunction of important organs such as the heart, liver, and lungs;
  3. Mental and behavioral abnormalities;
  4. Intellectual disability;
  5. Under 18 years old or over 75 years old;
  6. Low understanding and communication skills.
05

Study design

Observational model
Cohort
Time perspective
Cross-sectional
Enrollment
100 participants (actual)
Patient registry
No

Groups and cohorts

  • Observation

    Other: No Interventions

Interventions

  • OtherNo Interventions

    No intervention

06

What researchers measure

Primary outcomes

  1. PBMC

    When conducting blood sample analysis, we focus on separating and evaluating in detail the composition and counting of peripheral blood mononuclear cell (PBMC). This process involves identifying and quantifying various types of mononuclear cells in the sample, such as lymphocytes, monocytes, etc. These cells are crucial for understanding an individual's immune status. Through precise separation techniques and advanced cell analysis methods, we are able to obtain accurate and detailed reports on the classification and quantity of mononuclear cells.

    Time frame: About two and a half years

07

Study locations

1 site
  • The First Affiliated Hospital of Air Force Military Medical University
    Xi'an City, Shaanxi 710004, China
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 8, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT06763887
Lead sponsor
Xijing Hospital
Responsible party
Sponsor
First posted
Jan 8, 2025
Start date
Nov 15, 2023
Primary completion
Jun 30, 2024
Completion
Jun 30, 2024
Last update
Jan 8, 2025

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Nov 2024. You cannot join it, but the record below documents what was studied.

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