Hepatitis A is an illness which affects the liver and is caused by a virus. (You’ll be shocked to learn it's called the hepatitis A virus.) It is usually transmitted through food and water contaminated by human feces, even in microscopic amounts. In the US outbreaks have frequently been linked to food workers who have hepatitis A and contaminate food with their hands. The disease typically causes fatigue, abdominal pain, jaundice (yellowing of the skin and eyes), and dark urine. Patients typ...