Efficacy Trial of a Vaccine to Prevent Herpes Zoster in Adults Over 40 Years of Age

Inclusion criteria

• Healthy volunteers aged over 40 years (male or female).
• Able to comply with all clinical trial protocol requirements and willing to complete all the visit plan process during the whole clinical trial observation period.
• Able to understand the content of informed consent and willing to sign the informed consent.
• Able to complete the diary card independently.
• For females only (40-49 years), a negative urine pregnancy test and willing to practice continuous effective contraception during the study.
• Axillary temperature ≤37.0°C.

Exclusion criteria

• Prior history of herpes zoster.
• Prior history of vaccination with herpes zoster vaccine or chickenpox vaccine.
• History of allergic disease likely to be exacerbated by any component of the vaccine.
• Taking immunoglobulins and/or any blood products within the last 3 months or will receive these products during the study period.
• Taking certain pharmaceuticals to be like salicylate kind, including aspirin, and difluorosalicylic, or going to take these medicine during the study period.
• Participation in another research study involving receipt of an investigational product in the last 30 days.
• Prior administration of attenuated vaccine in last 28 days.
• Prior administration of subunit vaccine, inactivated vaccine or allergic therapy in last 14 days.
• History of serious disease and the participation in the clinical trial is likely to increase the disease risk and interfere with the observation of clinical trial index.
• Taking immunosuppressive therapy in last 6 months.
• Any autoimmune disease or immunodeficient state, autoimmune disease or immunodeficient disease.
• Active tuberculosis patient.
• Acute or chronic infections at the vaccination day (axillary temperature>37.0°C).
• Coagulation disorders (coagulation factor deficiency, coagulopathy or platelet disorder) diagnosed by doctors, or obvious bruises or blood coagulation noticed.
• Woman who is breast-feeding.
• Any other conditions may compromise the safety or availability of participants in the judgment of the investigator.