Immunogenicity and Safety of Inactivated Hepatitis A Vaccine in HIV-infected People

Launched by LIUZHOU PEOPLE'S HOSPITAL · Aug 26, 2024

Keywords

ClinConnect Summary

This clinical trial is studying the safety and effectiveness of the inactivated Hepatitis A vaccine in people living with HIV. The researchers aim to find out how well the vaccine works to build protection against Hepatitis A in individuals aged 1 to 40 years who have controlled HIV, meaning their virus levels are low enough (less than 200 copies/ml) to be considered stable. To participate, individuals must not have had Hepatitis A before, must not have received certain vaccines recently, and must not have severe allergies or other serious health conditions.

Participants will receive two doses of the vaccine, spaced six months apart, and will have blood samples taken before and after each dose to check for the presence of antibodies, which show that the body is responding to the vaccine. Participants will also report any side effects they experience within a month after receiving the vaccine. This is a great opportunity for eligible individuals to contribute to important research that could help improve vaccine strategies for people living with HIV.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • HIV-infected participants aged 1-40 years old
• • The HIV viral loads of participants in the past 12 months were supposed to be less than 200 copies/ml
• • Participants or his/her guardian can fully understand and voluntarily sign the informed consent 4. Participants who are willing to participate in the 7-month follow-up 5. Participants who can provide valid legal identification
• Exclusion Criteria:
• • Participants who have infected with hepatitis A;
• • Participants who have been vaccinated with inactivated or live-attenuated hepatitis A vaccine, or hepatitis A and B combined vaccine
• • Participants who are allergic constitution or severe allergic to vaccines or components in the past (such as acute allergic reaction, angioedema, dyspnea, etc.)
• • Pregnant women and lactating women
• • People suffering from uncontrolled epilepsy and other serious neurological diseases (such as transverse myelitis, Guillain-Barré syndrome, demyelinating diseases, etc.)
• • Participants with fever (axillary temperature ≥37.3℃) during vaccination, or acute exacerbation of chronic diseases, or participants with uncontrolled severe chronic diseases, or suffering from acute diseases
• • Participants who have received other experimental drugs within 30 days before vaccination with the experimental vaccine
• • Participants who have received live-attenuated vaccine withins 14 days before vaccination with the experimental vaccine
• • Participants who have received subunit or inactivated vaccines within 7 days before vaccination with experimental vaccine
• • According to the investigator's judgment, participants who has any other factors that make him or her unsuitable for vaccination
• Exclusion Criteria of second vaccination:
• • Participants who meet one of the following events (1) to (4), should not receive the second vaccination, but can continue other study steps according to the investigator's judgment; if participants who meet one of the following events (5) or (6), can still receive the second vaccination according to the investigator's judgment.
• • Participants who meet one of the following events (7) to (10) can postponed the second vaccination within the time window specified in the protocal.
• • 1. Vaccines of the same type other than the experimental vaccine were used during the study;
• • 2. Any serious adverse reaction that is causally related to the experimental vaccination
• • 3. Severe allergic reaction or hypersensitivity reaction after vaccination (including urticaria/rash occurring within 30 minutes after vaccination)
• • 4. Pregnant after the first vaccination (those who had positive result for urine pregnancy test or those who are known to be pregnant)
• • 5. Acute or recently diagnosed chronic disease that occurred after the first vaccination
• • 6. Other reactions (including severe pain, severe swelling, severe limitation of activity, persistent high fever, severe headache, or other systemic or local reactions) are diagonosed by investigator
• • 7. Suffering from acute illness (acute illness refers to moderate or severe illness with or without fever);
• • 8. Axillary temperature ≥37.3℃ during vaccination;
• • 9. Have received subunit vaccine or inactivated vaccine within 7 days, and have received live attenuated vaccine within 14 days
• • 10. According to the investigator's judgment, participants who has any other factors that make him or her unsuitable for vaccination