Most cases of enterically transmitted non-A, non-B hepatitis in India
have so far been attributed to hepatitis E virus (HEV) infection. Most
of the documented studies of hepatitis have focused on the incidence
of this disease in northern, western, and south central India. A small
seroprevalence study was conducted in the eastern Indian city of Patn
a to assess the degree of HEV infection among acute sporadic hepatitis
cases. Forty-two percent (24 of 57) of the cases of acute sporadic he
patitis were positive for anti-HEV antibodies. Absence of any serologi
c markers of hepatitis A, B, or E in 58% (33 of 57) of the cases with
symptoms of acute hepatitis suggest that there may be as yet unidentif
ied enterically transmitted viruses in this area.