Phase 4 Clinical Trial to Assess the Safety, Immunogenicity,Three-year Immune Persistence of Inactivated Hepatitis A Vaccine (HAV) and Live Attenuated HAV Vaccine
Overview
- Phase
- Phase 4
- Intervention
- Not specified
- Conditions
- Hepatitis A
- Sponsor
- Institute of Medical Biology, Chinese Academy of Medical Sciences
- Enrollment
- 35000
- Locations
- 1
- Primary Endpoint
- changes of hepatitis A antibody concentration
- Status
- Completed
- Last Updated
- 2 years ago
Overview
Brief Summary
The purpose of this Phase 4 trial is to assess the safety, immunogenicity, three-year immune persistence of inactivated hepatitis A vaccine (HAV) and live attenuated HAV vaccine.
Detailed Description
Hepatitis A refers to liver inflammation caused by infection with the hepatitis A virus. HAV is is one of the most common hepatitis viruses that can cause hepatitis in China. The data from the phase 1, 2 and 3 trials suggested that both inactivated hepatitis A vaccine and live attenuated hepatitis A vaccine had a clinically acceptable safety and good immunogenicity for healthy Chinese people.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Only subjects fulfilling all of the following criteria will be eligible for the study:
- •People aged from 18 months to 65 years old.
- •The subjects or subjects' guardians are able to understand and sign the informed consent
- •The subjects or subjects' guardians allow to comply with the requirements of the protocol
- •Subjects with temperature \<=37.0°C on axillary setting
- •The subjects have signed informed consent already
Exclusion Criteria
- •Subjects will not be eligible for the study if any of the following criteria is met:
- •Subject who has a medical history of serious disease including Tumor, autoimmune disease, progressive atherosclerosis diseases or complications of diabetes, chronic obstructive pulmonary disease (copd), kidney disease, congestive heart failure etc.
- •Have a history of neurological symptoms or signs
- •Have medical history or family history relating to allergies, seizures, epilepsy, brain and spirit etc.
- •Suffering from serious chronic diseases
- •Suffering from known or suspected of diseases including respiratory diseases, acute infection , mothers have HIV infection, cardiovascular disease, severe hypertension, skin diseases, malignant tumor
- •Allergic to any ingredient in research, history of allergies to any vaccination (always), especially for people allergic to high protein food like eggs and milk
- •Any prior known or suspected damage or abnormal immune function. As for patients who are treated with immune inhibitors or immune enhancer medicine, accept with immunoglobin, blood products and plasma extraction within 3 months
- •Any prior diseases including human immunodeficiency virus infection or related
- •Bleeding constitution or prolong bleeding time situation
Outcomes
Primary Outcomes
changes of hepatitis A antibody concentration
Time Frame: up to 43 months
1. Changes of anti-HAV antibody geometric mean concentrations at pre-vaccination, month 1,12, 24, 36, and 1 months after the booster vaccination.
Secondary Outcomes
- The frequency of all the adverse events in vaccine group and placebo group(up to 43 months)