Acute Viral Hepatitis
Acute Viral Hepatitis (Hepatitis A and Hepatitis E) Acute Viral Hepatitis is a systemic infection afecting the liver. Almost all cases of acute viral Hepatitis are caused by one of five viral agents: Hepatitis A (HAV), Hepatitis B (HBV), Hepatitis C (HCV), the HBV-associated delta agent or Hepatitis D Virus (HDV) and Hepatitis E (HEV). All these human hepatitis viruses are RNA viruses, except for hepatitis B, which is a DNA virus but replicates like a retrovirus. While hepatitis A and E are often the cause for sporadic or outbreaks of hepatitis, hepatitis B and C can either clear spontaneously or can lead to chronic infection Mode of Transmission Hepatitis A: HAV is a non-enveloped RNA virus belonging to the picornavirus family, with four genotypes belonging to one serotype. This agent is transmitted almost exclusively by the fecal-oral route. It is an outbreak prone disease with an incubation period of around four weeks. Person-to-person transmission of ...
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