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| Isolation replicated in the liver of the pathogen in the blood and other body fluids starts on average at least 14 days prior to the onset of clinical symptoms and biochemical changes. Period of chronic hepatitis can last from several months up to 20 lay down, and more. Course and outcome of acute viral hepatitis are caused not by pathogenic properties of infectious agents, and the reaction of the immune system at the root in the liver cells the virus. As a result of the cellular immune reaction directed at neutralizing the virus antigens, together with the agent dies and infected cells. Lack of immune response to pathogen is accompanied by a chronic asymptomatic virus carrier. Proved the possibility of transmission of acute viral hepatitis, neither A nor B infections and the placenta. In India and other Asian countries are described outbreaks of acute viral hepatitis, neither A nor B-type epidemic that spreads through infected water. |
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