The hepatitis A virus is found in the faeces of an infected person. It is usually acquired from hands that are soiled after using the toilet or changing a nappy, or by swallowing water or food that have been contaminated by human faeces.
Uncooked shellfish and raw vegetables contaminated by sewage can also be a route of infection.
In addition, sexual contact with an infected person is a recognised route of infection.
Revised and reviewed by Dr Karin Richter, MMed Path (Medical Virology), FC Path(SA) Viro, Dip HIV Man (SA), Dip Obst (SA), MBChB , Clinical Virologist, Senior Lecturer, Department of Medical Virology, University of Pretoria, Faculty of Health Sciences, and Consultant Pathologist, Tshwane Academic Division, National Health Laboratory Services (NHLS) February 2015.