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Vaccinations01:51

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Immune Response Against Viral Pathogens01:29

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The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
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Myocarditis: Comprehensive Medical ManagementMyocarditis, the heart muscle inflammation, requires a comprehensive medical management strategy that addresses the underlying cause, provides supportive care, manages symptoms, and reduces cardiac workload.Infections and Autoimmune CausesAdminister appropriate antimicrobial therapy when an infectious agent causes myocarditis. For instance, penicillin treats infections caused by Group A Streptococcus. In cases where autoimmune processes are...
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Cytotoxic T Cells-mediated Immune Response01:27

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Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
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Updated: Aug 1, 2025

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Postvaccination immune-mediated hepatitis: what do we really know?

Angioletta Lasagna1, Paolo Pedrazzoli1,2, Raffaele Bruno3,4

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Immune-mediated vaccine-associated hepatitis is rare. The minimal percentage of affected patients highlights vaccine safety despite widespread global vaccination efforts.

Keywords:
AIHCOVID-19autoimmune hepatitishepatitisimmune checkpoint inhibitorsmolecular mimicryvaccination

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Area of Science:

  • Immunology
  • Hepatology
  • Vaccinology

Background:

  • Vaccine-associated adverse events are a public health concern.
  • Immune-mediated conditions can arise following vaccination.
  • Hepatitis, or liver inflammation, can have various etiologies.

Purpose of the Study:

  • To quantify the incidence of immune-mediated vaccine-associated hepatitis.
  • To assess the safety profile of vaccines concerning hepatitis development.

Main Methods:

  • Systematic review of global vaccination data.
  • Analysis of reported cases of hepatitis post-vaccination.
  • Epidemiological assessment of incidence rates.

Main Results:

  • The incidence of immune-mediated vaccine-associated hepatitis is very low.
  • The number of affected patients is minimal relative to the total vaccinated population worldwide.

Conclusions:

  • Current vaccination strategies demonstrate a favorable safety profile.
  • The risk of immune-mediated hepatitis following vaccination is negligible.