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Hepatitis B vaccination in HIV-infected subjects
Marco Bongiovanni1, Maddalena Casana
1Clinic of Infectious Diseases, San Paolo Hospital, University of Milan, Milan, Italy. marco.bongiovanni@unimi.it
Current Molecular Pharmacology
|December 22, 2009
Summary
Hepatitis B vaccination is crucial for individuals with human immunodeficiency virus (HIV) due to heightened risks. Suboptimal immune responses may necessitate adjusted vaccination schedules or higher doses for effective protection.
Area of Science:
- Infectious Diseases
- Immunology
- Hepatology
Background:
- Individuals with human immunodeficiency virus (HIV) face elevated risks of acute and chronic hepatitis B virus (HBV) infection.
- HIV infection exacerbates HBV viraemia, increasing the likelihood of HBV reactivation, chronic infection, cirrhosis, and mortality.
- Hepatitis B vaccination is recommended for all HIV-infected individuals without prior immunity.
Purpose of the Study:
- To review the challenges and strategies for effective hepatitis B vaccination in HIV-infected populations.
- To highlight factors influencing vaccine response and potential adjustments to vaccination protocols.
Main Methods:
- Review of existing literature on hepatitis B vaccination in HIV-positive individuals.
- Analysis of factors affecting immune response, including CD4+ cell counts and HIV viral load.
- Discussion of alternative vaccination strategies based on immune response outcomes.
Main Results:
- Immune responses to hepatitis B vaccine are often suboptimal in HIV-infected individuals.
- Higher CD4+ cell counts and lower HIV viraemia correlate with better vaccine response rates.
- Consideration of higher vaccine doses or extended vaccination schedules may improve immunogenicity.
Conclusions:
- Re-vaccination is advised if post-vaccination antibody titers are below 10 mIU/mL.
- Universal immunization strategies targeting young and middle-aged adults are essential for protecting populations at risk of sexually transmitted diseases, including HIV and HBV.
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