<s>[INST] hi i m 7 months pregnant 27 yrs old i m found to be hbsag infected although i was vaccinated in childhood against this infection whereas my husband is hbsag negative how would it affect my child and whta should i do?  what could be the possible reasons of getting infected? plz guide [/INST] Hello Madam, Thank you for your question and welcome to Chat Doctor. I read carefully your query and I understand your concerns. The transmission pathways of HBV are via infected blood (e.g. transfusion) or blood contained equipments(unsterile needles e.g. having a tattoo, piercing, or having dental procedures etc.) and infected body fluids (unprotected sex). Regarding the possible treatment of your child, I would strongly recommend to you to have prenatal care because in uteri infection is uncommon, representing no more than 5 percent of perinatal HBV infections. With such a presentation on my clinic I would recommend Hepatitis B Vaccine - first dose of the vaccine series and Hepatitis B immunoglobulin (BIG) - 1 or 2 doses to be given immediately in the delivery room (or within the first 12 hours of life), then there is more than a 95% chance that a newborn will avoid a chronic HBV infection. Hope I helped with my answer. Feel free to ask again if you have further concerns, I would be happy to answer you. Wishing you health, </s>