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Delta agent infection in Melbourne.

J F Hoy, B G Hansson, M Dimitrakakis

Journal of Medical Virology

|January 1, 1984

Summary

Researchers investigated delta agent infection in acute hepatitis B patients and HBsAg carriers. Delta infection was found in 14.4% of acute hepatitis B cases and 7.1% of carriers, predominantly intravenous drug users.

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Area of Science:

Hepatology
Virology
Infectious Diseases

Background:

Hepatitis B virus (HBV) infection is a significant global health concern.
The delta agent (hepatitis D virus, HDV) is a unique RNA virus that requires HBV for replication.
Coinfection with HBV and HDV can lead to more severe liver disease.

Purpose of the Study:

To determine the prevalence of delta agent infection among patients with acute hepatitis B and chronic hepatitis B surface antigen (HBsAg) carriers in Melbourne.
To identify risk factors associated with delta agent infection in this population.

Main Methods:

Serum samples from 284 patients with acute hepatitis B and 127 HBsAg carriers were collected between July 1981 and June 1982.
Solid-phase radioimmunoassay (SPRIA) was used to detect delta antigen (delta ag) and/or antibody (anti-delta).

Main Results:

Evidence of delta agent infection was detected in 14.4% of patients with acute hepatitis B.
Delta agent infection was identified in 7.1% of chronic HBsAg carriers.
A significant proportion (88%) of individuals with confirmed delta agent infection were intravenous drug users.

Conclusions:

The delta agent is prevalent in patients with acute hepatitis B and chronic HBsAg carriers in Melbourne.
Intravenous drug use is a major risk factor for delta agent infection.
These findings highlight the importance of screening for delta agent in at-risk populations.

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