HEPATITIS-D VIRUS (HDV) INFECTION IN SEVERE FORMS OF LIVER-DISEASES IN NORTH-INDIA

Background: Preliminary reports indicate that hepatitis D virus (HDV) infection exists in India. However, its prevalence in patients with di fferent types of liver diseases has not been studied in detail. The ai m of this study was to evaluate the status of HDV infection in severe types of liver disease in India.Methods: Using commercial kits for var ious hepatitis viral markers, the present study was undertaken to dete rmine the serological status of hepatitis B virus (HBV) and hepatitis D virus (HDV) markers in 208 patients with severe liver diseases. This total included 110 cases with fulminant hepatic failure (FHF), 65 cas es with subacute hepatic failure (SHF) and 33 cases with chronic activ e hepatitis (CAH). Results: The hepatitis B surface antigen (HBsAg) ca rrier population, indicated by the presence of HBsAg without IgM anti- HBc (hepatitis B core) in serum, was recorded in 23.6%, 24.6% and 60.6 % cases of FHF, SHF and CAH groups, respectively. HBV infection, as in dicated by serum positivity of IgM anti-HBc in the FHF and SHF groups and HBsAg and/or IgM anti-HBc in the CAH group, was detected in 19.1%, 23.1% and 69.7% of cases from these three groups, respectively. IgM a nti-HDV, demonstrating active/recent HDV infection, was found in 8.1% cases of FHF and 9.2% cases of SHF patients. HDV as a superinfection i n HBsAg carriers was noted in 4.5% and 4.6% cases, respectively of FHF and SHF groups. Similarly, HDV-HBV coinfection, diagnosed by simultan eous presence of IgM anti-HBc and IgM anti-HDV in the FHF and SHF grou ps, was recorded in 3.6% and 4.6% of cases from these two groups, resp ectively. In the CAH group, HDV infection was observed in 9.2% cases. Conclusion: HDV infection, recorded in less than 10% of patients with different liver diseases in India, seems to be an unimportant factor i n inducing severe liver diseases in this country.