In a 3 year old child, most common cause of hepatitis B is -

Ans. is 'd' i.e., Blood transfusion "Children usually acquire infection indirectly, through parenteral route from hepatitis B contaminated blood transfusion". Other modes of transmission in children : - i) Sharing of contaminated hypodermic needles used for multiple doses of infection. ii) Shaving razors. iii) Sexual contact Adolescent boy & girls.