Acute hepatitis B and C virus coinfection: a virological and clinical study of 3 cases.

We report the virological interaction in, clinical presentation of, and course of disease observed in 3 male injection drug users with acute hepatitis B virus (HBV) and hepatitis C virus (HCV) coinfection. In all 3 cases, HBV infection presented first and quickly resolved. Diagnosis of acute HBV/HCV coinfection requires a long follow-up period with careful observation.

HBV superinfection in hepatitis C virus chronic carriers, viral interaction, and clinical course.

We enrolled 44 patients with hepatitis B virus (HBV) acute infection, 21 anti-hepatitis C virus (HCV)-positive for at least 1 year (case BC group), 20 anti-HCV-negative (control B group), and 3 with HBV/HCV acute concurrent infection. For each case BC, a subject with chronic HCV infection alone was selected (control C group). At the first observation, 85.