B型和C型肝炎病毒是大多数血源性肝炎的病因,它们虽然主要通过血液和血制品传播,但唾液也是一个传染源。最近发现一种新的非A～E肝炎病毒的RNA病毒,非肠道传染,命名为G型肝炎病毒。G型肝炎的临床表现易被忽略,但在日本这种病毒被认为与某种不知原因的暴发性肝炎有关。HGV存在于唾液 Hepatitis B and C are the cause of most hematogenous hepatitis and although they are predominantly transmitted by blood and blood products, saliva is also a source of infection. Recently a new non-Hepatitis A virus RNA virus, non-intestinal infection, named Hepatitis G virus. The clinical manifestations of Hepatitis G are easily overlooked, but in Japan this virus is thought to be associated with some unknown cause of fulminant hepatitis. HGV is present in saliva