This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
A pregnant lady is diagnosed to be HBs Ag positive. Which of the following is the best way to prevent infection to the child: 
Select and explain. 
A. Hepatitis vaccine to the child, B. Full course of Hepatitis B vaccine and immunoglobulin to the child, C. Hepatitis B immunoglobulin to the mother, D. Hepatitis B immunization to mother
B: Full course of Hepatitis B vaccine and immunoglobulin to the child
Answer: B: Full course of Hepatitis B vaccine and immunoglobulin to the child 
Explanation: The best way to prevent infection in a child born to HBsAg positive mother is to give both active and passive immunization.
Infants born to HBsAg positive mothers should be given hepatitis immunoglobulin (0.5 m 1/m) within 12 hours after birth. Along with this the first dose of hepatitis B recombinant vaccine is given.
This is followed by hepatitis B vaccine at 1 and 6 months.
Hepatitis B is not a contraindication for breastfeeding.