Hepatitis A virus is a nonenveloped, icosahedral capsid (spherical shape) with single-stranded RNA genome. It belongs to the Picornaviridae family.
Orally transmitted, the virus may cause local infections of the intestinal epithelium, and then, after a short viraemic episode, attacks the liver, where it replicates and finally triggers hepatitis.
The main transmission paths is direct or indirect contact with contaminated persons or objects.
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