Prevalence and clinical-epidemiological characteristics of chronic hepatitis due to hepatitis delta virus on Gran Canaria Island.

OBJECTIVE

The objective of this study was to know the prevalence and clinical-epidemiological characteristics of patients with chronic infection due to hepatitis D virus (HDV).

PATIENTS AND

METHODS

A retrospective descriptive study was carried out on patients with HDV infection under follow-up in a hospital in 2023. All patients carrying HBsAg were tested for antibodies against HDV. HDV RNA detection was performed in all antibody-positive samples. The medical records were reviewed.

RESULTS

Of the 340 patients carrying HBsAg, 24 (7.1%) had anti-HDV antibodies, and 6 (25%) had detectable HDV RNA (chronic infection). The prevalence of chronic hepatitis in HBsAg carriers was 1.8%. All patients had a genotype 1 infection. Half of the patients were of African origin and 29.2% were Spanish. Of the 6 patients with chronic infection, 5 (83.3%) had cirrhosis and 2 (33.3%) had hepatocellular carcinoma. Half of the patients had some exacerbation of the disease during follow-up. Of the 18 patients without viremia, 2 (11.1%) presented cirrhosis (one recently diagnosed). The mean follow-up time of patients without viremia was 13.5 years.

CONCLUSIONS

The prevalence of chronic HDV hepatitis in our area is low and in all cases it presents as an advanced disease, with exacerbations during follow-up. Patients without viremia have probably resolved the infection, as viremia was not detected in any moment.