The harm of hepatitis B is well known to all, not only harm the body, “hepatitis B discrimination” more how many people make the heart hurt. As the saying goes, “it takes ten years to grow trees and a hundred years to nurture people”. Children are the future of the motherland, the hope of the whole family. Make the child get rid of the magic wand of hepatitis B virus is not only the parents’ greatest wish, but also the key to get rid of the “hepatitis country” hat of our Chinese nation. About 70% of chronic hepatitis B infections in China come from mother-to-child transmission and other intra-family transmission. Before the introduction of hepatitis B vaccine, more than 90% of the children of “triple positive” mothers would become hepatitis B carriers. Fortunately, prevention methods are now available, but a small percentage will still fail the immunization. In order to protect their babies from hepatitis B infection, parents-to-be often have a long list of questions, some of the most common of which are answered below. 1. What is the success rate of mother-to-child transmission interruption? Is immunoprophylaxis enough for everything? For the babies of hepatitis B carrying mothers, no matter major or minor triple positive, it is recognized at home and abroad that the blockage is to take active and passive combined immunization. The child is injected with Hepatitis B immunoglobulin within 24 hours after birth (the earlier the better, preferably within 2 hours), while Hepatitis B vaccination is carried out within 24 hours after birth (the earlier the better), at 1 month and at 6 months. Many units in China also carry out prenatal injection of hepatitis B immunoglobulin to block intrauterine infection. Babies of small triple positive, HBVDNA-negative moms are mostly completely blocked. The success rate of blocking for mothers with triple III infection is more than 90%. It is important to note that Hepatitis B immunoglobulin should be kept refrigerated at 2-8 degrees before injection. The positive rate of protective antibodies is around 90% after the full course of hepatitis B vaccination. Therefore, after your child has received three doses of the vaccine, you should also go to the hospital to check whether your child has produced surface antibodies. Is the titer enough? If surface antibodies are not produced or the titer is not sufficient, a booster vaccination is needed. In addition, it should also be noted that the antibody produced by the vaccine does not last a lifetime, it should be reviewed, and if necessary, need to strengthen the vaccination. 2.Will a pregnant woman with hepatitis B who chooses cesarean section reduce her baby’s chance of being infected? Theoretically, cesarean section can avoid the baby through the birth canal can be swallowed infectious mother’s blood, amniotic fluid or vaginal secretions, in addition to reduce the delivery of mother’s blood to the baby’s micro-penetration, so it can reduce the baby’s chance of infection. However, studies have shown that cesarean section does not further reduce the rate of immunization failure. Therefore maternal hepatitis B carriage should not be an indication for cesarean delivery. When a pregnant woman with hepatitis B chooses the mode of delivery, a combination of the individual’s physical condition, the condition of the fetus, the specialist’s opinion and the individual’s subjective wishes is the most sensible choice. However, it is important to pay attention to the delivery is isolated from other mothers, at the same time in the puerperium, the newborn and the mother should be separated from the bed, before touching the baby should wash their hands, so as not to contaminate the baby with vaginal secretions during puerperium. 3.Can the mother of hepatitis B breastfeed? At present, domestic scholars have two different opinions: one is that breast milk is the best natural food for infants, and even if there is hepatitis B virus in the milk of bi-positive mothers, the amount of the virus is far from being as high as that in the blood, and the hepatitis B virus will not be infected through the digestive tract, therefore, the most important thing for the prevention of hepatitis B lies in the timely injection of hepatitis B immunoglobulin and hepatitis B vaccine after birth. After using Hepatitis B immunoglobulin, infants have enough protective antibodies and breastfeeding will not increase the immune failure, but breastfeeding should not be done for the time being when the nipple is broken. Another group of scholars believe that in case of chronic infection is formed, it is a life-long matter, so it is better not to breastfeed as an insurance policy. Therefore, if a small number of mothers with HBV want to be safe, it is understandable that they do not choose breastfeeding, but they should think twice before doing so because artificial feeding requires high hygiene and economic conditions, otherwise it may increase the chances of the baby suffering from diarrhea, malnutrition and other diseases. 4. What should I do if other members of my family are hepatitis B carriers? In addition to mother-to-child transmission that can infect newborn babies with hepatitis B virus, before the implementation of hepatitis B vaccination, the level of transmission caused by close living contact in the family also accounts for a considerable proportion. Therefore, if there is a Hepatitis B carrier in the family, it is currently recommended that the rest of the family members, including mothers who are negative for Hepatitis B during pregnancy and breastfeeding, should be immunized with the Hepatitis B vaccine. On the one hand, the antibodies produced by immunization provide protection to the mother herself, and on the other hand, the antibodies can provide protection to the baby through the placenta. If a serologically negative pregnant woman has been exposed to the blood of a carrier of the hepatitis B virus, she should also be injected as soon as possible with highly effective hepatitis B immunoglobulin. It is also important to make sure that your child is vaccinated against hepatitis B in a timely manner. Until the child has antibodies, general household contact is acceptable, but no contact with blood (e.g. wounds) or body fluids. After completing the full course of immunization, it is a good idea to check whether your child has developed surface antibodies. Is the antibody level sufficient? If necessary, it is necessary to strengthen the vaccination, so as to make sure.