[Hepatitis A, hepatitis B--incidence of inpatient cases].

The incidence of hepatitis A, treated at hospitals in Austria in the year 1990, was 4,3/10(5) (n = 326), of hepatitis B 3,47/10(5). In hepatitis A the highest incidence was observed in children (5-9 years: 14.3/10(5)). Two peaks were observed in hepatitis B; 20-24 years: 5.93/10(5) and 60-64 years: 3.84/10(5). Both disease had the highest incidence in the district of Vorarlberg (hepatitis A 12.4/10(5), hepatitis B 6.86/10(5)), the lowest in the district of Burgenland (0.37/10(5) and no case of hepatitis B).