[Epidemiologic and clinical aspects of acute hepatitis B in the past decade].

To study the clinical and epidemiological aspects of acute B hepatitis during the last 11 years. We retrospectively studied 1712 patient files, admitted in the Department of Infectious Diseases Iaşi, with acute B hepatitis between 1992-2002. The majority of the patients (69%) had an urban origin. Teenagers and young adults were predominantly affected (59% had between 15 and 34 years). A point of entry of the pathogen was identified only in 20% of the patients. The mean incubation period was 4 month. 24% of the patients had a prolonged form of the disease (over 30 days of jaundice). A fulminant evolution was noted in 1.2% of cases. Extrahepatic involvement was described in 25% of the patients. The global mortality was 1.15%. The number of patients with acute B hepatitis decreased by half during the last 11 years.