A 2½ years old boy presented incidentally detected hepatomegaly. His liver enzymes continued to be elevated for next 6 months. Liver biopsy showed mild early fibrosis with liver copper content of 21.2 µg/gm though 24 hours urine copper was high and there was no KF ring. Hepatocytes were PAS positive. In view of positive anti smooth muscle antibody, he was started on oral steroids to which his liver enzymes. However enzymes started to rise and a repeat liver biopsy showed same amount fibrosis without interface hepatitis. His antibodies to ANA, smooth muscle, LKM were all negative.

What is the cause of his chronic hepatitis?

Yes, they prevent spread of influenza from healthcare workers to others
No, there is a risk of GBS