“…characterizing the cell-mediated immune response to HEV. Enterically transmitted non-A, non-B hepatitis occurs in epidemics or sporadically in many geographic locations, including India (13,14,27,32), Nepal (10), Burma (14,26), Pakistan (3), Mexico (30), the former Soviet Union (1), Africa (2, 24), North America (4), and Western Europe (17). Acute outbreaks of enterically transmitted non-A, non-B hepatitis primarily affect young to middle-aged adults and are often associated with a high mortality rate in infected pregnant women, approaching 20% in many reported epidemics (20).…”