Most HAV infections are asymptomatic and mild without jaundice, especially in children. The virus is spread primarily by the anal-oral route meaning that water or food can be contaminated with the virus by sewage or by food handlers who do not wash their hands thoroughly after using the bathroom. Person to person transmission of HAV is often due to poor sanitary conditions. HAV is commonly seen in school-age children and young adults. In many cases, HAV has been traced to fruits, vegetables, or other uncooked foods contaminated by food handlers or water.
Most persons have no symptoms.
Usually children experience no symptoms. An infected person can transmit the virus to others two weeks before symptoms appear and one week after. Complete recovery takes up to six months and all symptoms will disappear. The more severe cases are seen in the elderly. Anyone eating contaminated food or water and in close personal contact with those who have HAV infection.