Patient's question:
My baby is a premature child. I was very worried about the child's condition from the beginning. Recently, the child has appeared with this series of conditions, and I am also very worried, afraid that the child will get worse. How long does a newborn take to have antibodies?Doctor's answer:
Generally, it should take about 3 months. First, there are individual differences among people, so the chances of infants producing antibodies vary. After the first shot, only 18% of people develop antibodies, and this increases to 41% one month later. After the second shot, 80-90% of recipients develop antibodies. Six months after the third shot, 96% of people show positive antibody levels, which remain stable for several years. It is recommended that infants can have their hepatitis B antibody levels checked 20 days after completing the full course of hepatitis B vaccination.