Viral hepatitis A
Viral hepatitis A, referred to as hepatitis A and hepatitis A for short, is an infectious disease caused by hepatitis A virus (HAV) and dominated by liver inflammatory lesions. It is mainly transmitted through fecal oral route. Clinically, it is mainly manifested by fatigue, anorexia, hepatomegaly and abnormal liver function. Jaundice occurs in some cases, mainly manifested as acute hepatitis. Asymptomatic infection is common. It can be contracted at any age, but it is mainly children and adolescents. The clinical symptoms of hepatitis A in adults are generally severe in children. Winter and spring are often the peak of hepatitis A. The course of the disease is self limiting and non chronic. It is very rare to cause acute severe hepatitis. With the use of inactivated vaccine all over the world, the prevalence of hepatitis A has been effectively controlled.
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