... , African green monkeys, tamarins, marmosets and squirrel monkeys by the fecal-oral route, and contaminated water or food supplies have ... with nausea, vomiting, anorexia,jaundice, abdominal pain, fever, and hepatomegaly. The clinical presentation of HEV is similar to that of acute ... and persists for four-to-five months after resolution of the acute illness. IgG anti-HEV persists for four-to-five years ...