Hepatitis B e antigen and antibody activity in hepatitis B virus infection.

Groups of institutionalized subjects, volunteer blood donors with serologic evidence of asymptomatic hepatitis B virus infection, and patients with acute type B viral hepatitis were studied for the presence of hepatitis B e antigen and antibody in a sequential manner over a period of two to three years. HBeAg was detected in 9.5% of institutionalized residents and volunteer blood donors and in 24% of patients with acute type B viral hepatitis. HBeAg positive subjects frequently had persistently elevated pyruvic glutamic transaminase levels in the serum. Anti HBe activity was observed in 26 to 32% of subjects positive for hepatitis B surface antigen. Long-term follow-up indicated that HBsAg positive subjects with anti HBe did not eventually become seronegative for HBsAg.