<prompt> A 45 day-old infant developed icterus and two days later symptoms and signs of acute liver failure appeared. Child was found to be positive for HbsAg. The mother was also HBs Ag carrier. The mothers hepatitis B serological profile is likely to be:HBsAg positive onlyHBsAg and HbeAg positivityHBsAg and anti-HBe antibody positivityMother infected with mutant HB V  <response>: HBeAg-positive women in third trimester frequently transmit infection to the fetus 80-90 in the absence of immunoprophylaxis, whereas those who are negative rarely infect the fetus. Ref: Kliegman, Behrman, Jenson, Stanton 2008, Chapter 355, Viral Hepatitis, In the book, NELSON TEXTBOOK OF PEDIATRICS, Volume 2, 18th Edition, New Delhi, Page 1683. 