New Challenges for Natural and Vaccine-Induced Immunity against HBV Infection: Second Edition

A special issue of Vaccines (ISSN 2076-393X). This special issue belongs to the section "Hepatitis Virus Vaccines".

Deadline for manuscript submissions: closed (1 June 2023) | Viewed by 208

Special Issue Editor


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Guest Editor
Department of Experimental Medicine, Tor Vergata University, 00133 Rome, Italy
Interests: hepatitis B virus; vaccine-escape mutants; occult hepatitis B; HCC; HIV coinfection; HDV coinfection; ultrasensitive assays; viral variability
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Special Issue Information

Dear Colleagues,

This Special Issue is a continuation of our previous Special Issue on “New Challenges for Natural and Vaccine-Induced Immunity against HBV Infection” (https://www.mdpi.com/journal/vaccines/special_issues/HBV_vaccine).

The availability of an effective vaccine against hepatitis B infection has produced a strong decline in the number of new cases of HBV-related hepatitis worldwide. However, the coverage of anti-HBV vaccination remains suboptimal in many geographical areas, with the most relevant drop occurring in low-income countries. Accordingly, HBV infection remains an important public health problem, with over 250 million chronically infected patients worldwide.

It is worth noting that, despite the overall high efficacy of anti-HBV vaccination, a non-negligible (but not well-defined) ratio of persons are “non-responders” to the vaccine, failing to achieve a protective concentration of antibodies able to prevent HBV infection. This aspect could be particularly critical in special populations with impaired immune responses, such as patients with hematological malignancies or HIV infection. Overall, the rate of non-responders, the host factors predisposing to a reduced or lack of response to anti-HBV vaccination, and the long-term kinetics of anti-HB antibodies remain poorly investigated.

Another potential pitfall of HBV vaccination, and more generally of immune control of HBV, is related to the circulation of viral strains, carrying mutations in the surface antigen (HBsAg), which have been demonstrated to alter the affinity of antibodies, both naturally produced by the immune system and induced by vaccination. The circulation of these variants deserves careful monitoring since they can be transmitted to vaccinated people or favor HBV reactivation events.

For this Special Issue, we welcome all original research papers, reviews, clinical cases, and methodological novelties able to shed new light on the immune response to HBV infection, including that induced by anti-HBV vaccination, and on the role of HBV genetic variability in modifying the ability of the immune system and vaccination to prevent/control HBV infection.

Dr. Romina Salpini
Guest Editor

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Keywords

  • anti-HBV vaccine
  • HBV variability
  • vaccine escape
  • anti-HBV immune response
  • immune-suppression-driven HBV reactivation
  • anti-HBs titer
  • nti-HBc titer
  • HBsAg antigenicity
  • anti-HBV immunomodulators
  • non-responders

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Published Papers

There is no accepted submissions to this special issue at this moment.
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