Safety and Immunogenicity of COVID-19 Vaccine Administered in Older Adults

Study Overview
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Brief Summary
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The COVID-19 pandemic is causing unprecedented morbidity and mortality.The safe and effective Novel coronavirus vaccine is an effective means to block the transmission of the virus by building up the immune barrier of the population.Clinical studies have shown that elderly people are at high risk of severe COVID-19 infection and have poor clinical prognosis.Considering the current situation of aging population in China, the elderly people should be given priority to vaccinate to obtain protection and reduce the risk of novel coronavirus infection.However, the current data on vaccines are mostly from young and middle-aged healthy people, while there is little research data on COVID-19 vaccination in the elderly.This study mainly studied the safety and effectiveness of COVID-19 vaccine in the elderly population and explored its potential immune mechanism.

Detailed Description
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This study is a prospective, multicenter, controlled , open-label and phase I clinical trial. Older adults in the study included healthy people between the ages of 60 and 80 group. Those who is in line with the inclusion criteria and who is not in conformity with the exclusion criteria received two doses of COVID-19 vaccine at 0 days (baseline) and 21 days, respectively, and were followed up at 1, 3, 6, 9 and 12 months after completion of vaccination.

Official Title
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Safety and Immunogenicity of COVID-19 Vaccine Administered in Older Adults: A Multicenter Prospective Study

Conditions
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COVID-19 Vaccine, Older Adults

Intervention / Treatment
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* Biological: COVID-19 Vaccine


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: A COVID-19 vaccine is planned. Older adults subjects aged 60-80 years or young adults subjects aged 18-59 years. Able and willing to follow the requirements of the clinical trial protocol and complete the study follow-up for 12 months. HBsAg, anti-HCV, HIV and TPHA were negative. Body temperature ≤37.0℃. Exclusion Criteria: People who are allergic to any component of the vaccine, or have a serious history of vaccine allergy. Women who is pregnant, breastfeeding, or planning to be pregnant within 6 months. Sufferring serious cardiovascular diseases, such as arrhythmia, conduction block, myocardial infarction, and severe hypertension can not be well controlled by drugs. Patients with severe chronic diseases or diseases can not be controlled well during the progress, such as asthma, diabetes, thyroid disease, etc. Patients with congenital or acquired angioedema / neuroedema. Patients with lymphoma, leukemia and other systemic malignancies. Patients with convulsions, epilepsy, encephalopathy, psychiatric disorders and other progressive neurological disorders, or a family history of them. Patients with acute attack of chronic diseases. During vaccination, immunomodulators, systemic cytotoxic drugs, immune checkpoint inhibitors (PD-1 / PDL-1 / CTLA-4, etc.) and cell therapy, including NK cells, cytokine induced killer cells, Dendritic cells, CTL and Stem cells infusion are required. Other conditions determined by the researcher.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 80 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: COVID-19 Vaccines in older adults<br>Healthy people between the ages of 60 and 80 inoculated coronavirus vaccine on day 0 and day 21, respectively. | Biological: COVID-19 Vaccine<br>* Coronavirus vaccine was inoculated on day 0 and day 21, respectively.<br>|
| Experimental: COVID-19 Vaccines in young adults<br>Healthy people between the ages of 20 and 59 inoculated coronavirus vaccine on day 0 and day 21, respectively. | Biological: COVID-19 Vaccine<br>* Coronavirus vaccine was inoculated on day 0 and day 21, respectively.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Safety of coronavirus vaccine | Recorded the adverse effects after COVID-19 vaccination | Within 2 months after the first dose of coronavirus vaccine | 
| Immunogenicity of coronavirus vaccine | Detected the dynamics and titers of anti-SARS-CoV-2 antibodies | Within 2 months after the first dose of coronavirus vaccine | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Safety of coronavirus vaccine | Recorded the adverse effects after COVID-19 vaccination | Through study completion, an average of 13 months | 
| Immunogenicity | Detected the dynamics and titers of anti-SARS-CoV-2 antibodies | Through study completion, an average of 13 months |