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Open Access 01-12-2017 | Review

Hepatitis delta: virological and clinical aspects

Authors: Luan Felipo Botelho-Souza, Mariana Pinheiro Alves Vasconcelos, Alcione de Oliveira dos Santos, Juan Miguel Villalobos Salcedo, Deusilene Souza Vieira

Published in: Virology Journal | Issue 1/2017

Abstract

There are an estimated 400 million chronic carriers of HBV worldwide; between 15 and 20 million have serological evidence of exposure to HDV. Traditionally, regions with high rates of endemicity are central and northern Africa, the Amazon Basin, eastern Europe and the Mediterranean, the Middle East and parts of Asia. There are two types of HDV/HBV infection which are differentiated by the previous status infection by HBV for the individual. Individuals with acute HBV infection contaminated by HDV is an HDV/HBV co-infection, while individuals with chronic HBV infection contaminated by HDV represent an HDV/HBV super-infection. The appropriate treatment for chronic hepatitis delta is still widely discussed since it does not have an effective drug. Alpha interferon is currently the only licensed therapy for the treatment of chronic hepatitis D. The most widely used drug is pegylated interferon but only approximately 25% of patients maintain a sustained viral response after 1 year of treatment. The best marker of therapeutic success would be the clearance of HBsAg, but this data is rare in clinical practice. Therefore, the best way to predict a sustained virologic response is the maintenance of undetectable HDV RNA levels.

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Title: Hepatitis delta: virological and clinical aspects
Authors: Luan Felipo Botelho-Souza
Mariana Pinheiro Alves Vasconcelos
Alcione de Oliveira dos Santos
Juan Miguel Villalobos Salcedo
Deusilene Souza Vieira
Publication date: 01-12-2017
Publisher: BioMed Central
Published in: Virology Journal / Issue 1/2017
Electronic ISSN: 1743-422X
DOI: https://doi.org/10.1186/s12985-017-0845-y

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Hepatitis delta: virological and clinical aspects

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