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病毒性肝炎是世界上许多地区的一个主要卫生问题,至少以3种不同的形式存在:甲型肝炎、乙型肝炎和非甲非乙型肝炎。它们可通过粪-口途径、血液或某些血液制品的输入或密切接触患者而得到传播。此外,当乙型肝炎病毒(HBV)长期携带者受到重复感染时,最近检出的σ病毒可引致严重疾病,并使迅速进展性慢性肝病的发病率增高。每年,有数千万人感染这些病毒,给卫生和国
Viral hepatitis is a major health problem in many parts of the world and exists in at least three different forms: Hepatitis A, Hepatitis B and Non-Hepatitis B. They can be transmitted via the fecal-oral route, the input of blood or certain blood products, or in close contact with patients. In addition, when the long-term carriers of hepatitis B virus (HBV) are repeatedly infected, the recently detected sigma virus causes serious illness and increases the incidence of rapidly progressing chronic liver disease. Every year, tens of millions of people are infected with these viruses for health and national development