This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastrointestinal tract, Subject name: Pediatrics
Which one of the following hapatitis viruses have significant perinetal transmission ? 
Select and explain. 
A. Hepatitis E virus, B. Hepatitis C virus, C. Hepatitis B virus, D. Hepatitis A virus
C: Hepatitis B virus
Answer: C: Hepatitis B virus 
Explanation: Hepatitis B virus infection is prevalent in Asia, Africa,Southern europe.HBsAg seropositive ranges from 2-20%.In hyperendemic areas HBV infections occur mainly during infancy and early childhood.In Asia perinatal transmission from HBsAg mother to their infants is a very impoant route of transmission,leading to chronicity.Approximately 90%of the infants of HBeAg seropositive carrier mothers become HBsAg carriers,irrespective of a high or low HBsAg carrier rate in the population. Ref : ESSENTIAL PEDIATRICS,O.P.GHAI, PG NO:192, 7thedition