Hepatitis B virus

James S. Ford, Jose D. Debes

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Hepatitis B virus (HBV) is the most common cause of liver cancer worldwide. Chronic hepatitis B (CHB) is defined as the presence of HBsAg for >6 months. Transmission occurs via pregnancy, sexual intercourse, and contact with infected blood. CHB is rarely symptomatic; therefore a high index of suspicion is needed and routine screening should be employed, especially in high-risk populations. Risk of developing CHB is highly dependent on age of exposure (>90% if exposed as a newborn, ~5% if exposed as an adult). Most treatments for HBV aim to control but not cure the infection. Treatment is indicated in the presence of cirrhosis or in the presence of active viral replication plus evidence of liver inflammation or fibrosis. HBV is vaccine preventable. While all patients will benefit from vaccination, newborns, children, and pregnant woman should be prioritized.

Original languageEnglish (US)
Title of host publicationTreatment and Management of Tropical Liver Disease
PublisherElsevier
Pages8-16
Number of pages9
ISBN (Electronic)9780323870313
ISBN (Print)9780323870320
DOIs
StatePublished - Jan 1 2023

Bibliographical note

Publisher Copyright:
© 2025 Elsevier, Inc. All rights reserved.

Keywords

  • cirrhosis
  • hepatitis B virus
  • hepatocellular carcinoma

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