About this trial
The purpose of this clinical study is to evaluate the safety and immunogenicity of receiving two doses of recombinant herpes zoster vaccine (CHO cells) (RHZV) in healthy individuals aged 40 years and above. This study will be conducted in 2 substudies: Substudy A (Phase I) and Substudy B (Phase Ⅱ).
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Age ≥ 40 years old on the day of enrollment, gender not limited.
Can provide legal proof of identity.
Be able to understand the experimental procedure and sign a written informed consent form, expressing agreement to participate in the experiment.
Be able to participate in all planned follow-up visits and comply with all trial procedures.
Disqualifiers
Individuals with a history of herpes zoster in the past.
Individuals with a history of vaccination against chickenpox or shingles.
Individuals who have had close contact with patients with chickenpox or shingles in the past 2 years.
Women of childbearing age who have a positive urine pregnancy test, are breastfeeding, pregnant, or plan to become pregnant within 6 months after the start of the test and the full exemption period.
Trial design
Parallel
Treatments tested in this trial
Recombinant herpes zoster vaccine with low-dose adjuvant
Biological/VaccineCandidate 1, Dose Level 1, Intramuscular injection, 0, 2 months schedule
Recombinant herpes zoster vaccine with high-dose adjuvant
Biological/VaccineCandidate 2, Dose Level 2, Intramuscular injection, 0, 2 months schedule
Low-dose adjuvant
Biological/VaccineAdjuvant control 1, Dose Level 1, Intramuscular injection, 0, 2 months schedule
High-dose adjuvant
Biological/VaccineAdjuvant control 2, Dose Level 2, Intramuscular injection, 0, 2 months schedule
Shingrix (GSK)
Biological/VaccinePositive control, Intramuscular injection, 0, 2 months schedule
Normal Saline
Biological/VaccinePlacebo control, Intramuscular injection, 0, 2 months schedule
Treatment groups
10
Treatment groupsSee each treatment group below.
Trial outcomes
Primary outcomes
Percentage of immediate Adverse Events (AEs)
The occurrence of any adverse events within 30 minutes after each dose of vaccination.
Percentage of solicited Adverse Events
Adverse events defined by the protocol that occurred to the participant during 0-14 days after each dose of vaccination.
Serious Adverse Events (SAE)
That is serious adverse events, any serious adverse events that occurred to the participant during the study period.
Percentage of unsolicited Adverse Events
Other adverse events that occurred among participants within 0-28/30 days after each vaccination, in addition to the solicited adverse events.
Secondary outcomes
SSB: Cellular immune level
Levels of glycoprotein E (gE)-specific CD4+/CD8+ T cells expressing 2 or more markers of activation.
SSB:Humoral immunogenicity level
Levels of GMC (Anti-gE antibody), GMT (Anti-VZV antibody), positive rate and seroconversion rate after receiving 2 doses of vaccine.
Sponsors and contacts
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