Viral hepatitis

Abstract

Virus hepatitis is a group of systemic infectious diseases induced by various types of hepatitis virus, predominantly with liver damages. Based on the pathogen, virus hepatitis can be categorized into five types: hepatitis A, hepatitis B, hepatitis C, hepatitis D, and hepatitis E. Hepatitis A and hepatitis E are transmitted mainly via fecal-mouth route which are mainly manifested as acute infections. Hepatitis B, hepatitis C, and hepatitis D are transmitted mainly via extra-gastrointestinal routes, commonly manifested as chronic infection, and the condition rarely develops into hepatic cirrhosis and even hepatocellular carcinoma.