Hepatitis A

n. non-serious viral disease which is not usually persistant in the blood and is transmitted through the consumption of contaminated food or water

Hepatitis A (formerly known as infectious hepatitis) is an acute infectious disease of the liver  caused by the hepatovirus hepatitis A virus. Most commonly transmitted by the fecal-oral route, such as contaminated food, hepatitis A does not typically have a chronic stage and does not cause permanent liver damage. The patient's immune system makes antibodies against the hepatitis A virus that confer immunity against future infection. A vaccine is available that will prevent infection from hepatitis A for at least ten years.[1]
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Hepatitis A is an inflammation of the liver caused by a virus, the hepatitis A virus. [more]Hepatitis A - Community and Resources

Noun
1. an acute but benign form of viral hepatitis caused by an RNA virus that does not persist in the blood serum and is usually transmitted by ingesting food or drink that is contaiminated with fecal matter
(synonym) infectious hepatitis
(hypernym) viral hepatitis

Hepatitis due to the hepatitis A virus which is usually transmitted by poor hygiene. (One reason why food service employees are required to wash their hands after using the toilet.)