Generally, the hepatitis B vaccination is divided into three shots, the first shot of the hepatitis B vaccine is given within 24 hours after the birth of the child, the second shot of the hepatitis B vaccine is given when the child reaches the age of one month, and the third shot of the vaccine is usually given to the child about five months apart. If your child has received all three vaccinations, it means that your child has completed the hepatitis B vaccination process. After the vaccination, you can go to the hospital to have your child tested for hepatitis B antibodies to see if he or she has produced enough antibodies. If the child has not produced enough antibodies, he/she needs to have a repeat vaccination against hepatitis B. It is generally recommended that the third vaccination against hepatitis B be given when the child reaches the age of six months. If the child has an acute respiratory infection such as a cold, fever, cough, or diarrhea, the vaccination can be delayed. Generally, it is not recommended to postpone the vaccination for too long, and it is appropriate not to postpone the vaccination until two weeks later.