Hepatitis D Virus: Introduction and Epidemiology

Prevalence and epidemiology of hepatitis C virus (HCV) infection in Rafsanjan

Abstract Background: Many individuals with chronic hepatitis C virus (HCV) infection are asymptomatic, population-based serologic studies are needed to estimate the prevalence of  infection which will help to take necessary procedures for prevension and control the disease.This study was conducted to find out the prevalence, of HCV infection among patients refering to the  hospit...

Epidemiology of Hepatitis B virus (HBV) Infection and its Prevalence in Rafsanjan

Background and Aims: Chronic hepatitis B virus (HBV) infection is one of the most important health problems worldwide. Currently, Iran is located in the intermediate HBV zone,This study was conducted to find out the prevalence of HBV  infection among patients referring the hospital care in Rafsanjan, Iran. Materials and Methods: A total of 2030 blood samples (471from  males and 1559 ...

Environmental epidemiology: An introduction

Hepatitis B virus infection: epidemiology and vaccination.

Worldwide, two billion people have been infected with hepatitis B virus (HBV), 360 million have chronic infection, and 600,000 die each year from HBV-related liver disease or hepatocellular carcinoma. This comprehensive review of hepatitis B epidemiology and vaccines focuses on definitive and influential studies and highlights current trends, policies, and directions. HBV can be transmitted ver...

Hepatitis D Virus

Hepatitis delta antigen (HDAg) was first described by Rizzetto et aL. (1977). Hepatitis D virus (HDV), also known as the 'delta agent', is a satellite agent of hepatitis B virus (HBV). HDV does not synthezise its own coat; it is enveloped by hepatitis B surface antigen (HBsAg), which occurs as large (L), middle (M) and smaII or major (S) surface proteins, differing in the length of the amino-te...