Hepatitis Viruses — MCQs

A 5 year old boy is detected to be HBsAg positive on two separate occasions during a screening program for hepatitis B. He is otherwise asymptomatic. Child was given three doses of recombinant hepatitis B vaccine at the age of 1 year. His mother was treated for chronic hepatitis B infection around the same time. The next relevant step for further investigating the child would be to –

Which of the following viruses is considered a defective virus that requires another virus for its replication?

Which of the following is true about Hepatitis A virus?

Which of the following markers in the blood is the most reliable indicator of recent hepatitis B infection?

Which of the following is the preferred treatment after birth for a baby of an HBsAg-positive mother?

Chronic viral hepatitis is seen with all of the following viruses, except?

A dentist suffered from Hepatitis B infection 3 months back. His liver function tests are normal, but HBsAg remains positive and he is not allowed by the medical board to do surgical practice. He is:

Which one of the following is the correct sequence of appearance for the Hepatitis B virus serological markers?

All are transmitted by blood except -

Which gene of the hepatitis B virus has the longest coding sequence?