Typical features include fever,
profound weakness, diarrhea, abdominal pain, cramping, nausea and vomiting for 3-5
days and maybe persisting for up to a week. Laboratory complications including elevated
aminotransferase levels, marked lymphocytopenia, and thrombocytopenia may have occurred.
Hemorrhagic fever occurs in less than half of patients and it takes place most commonly
in the gastrointestinal tract.