title: Update on viral hepatitis.
mesh_terms: D006506:Hepatitis A / Q000175:diagnosis / Q000453:epidemiology; D006509:Hepatitis B / Q000175:diagnosis / Q000453:epidemiology; D006525:Hepatitis, Viral, Human / Q000175:diagnosis* / Q000517:prevention & control; D006801:Humans; D014611:Vaccination