How often should the hepatitis B vaccine be given? Inject on time

Children nowadays have been vaccinated since the day they were born, but the general vaccine antibodies can only last for many years. For many students, they need to check frequently to see if they have antibodies. If they do not have antibodies, they must be vaccinated with hepatitis B vaccine in time, because most students use public tableware when eating at school. It is better to do an antibody test in case of emergency. If there are no antibodies, how often should the hepatitis B vaccine be given?

The antibody levels produced after hepatitis B vaccination gradually decrease over time. Generally, after vaccination, 97% of people can detect surface antibodies one month after three injections; the level remains at this level in the second year; and drops to around 74% in the third year, and the antibody titer also decreases. Whether revaccination is needed depends mainly on whether the titer of hepatitis B surface antibodies is measured and then deciding when to get the hepatitis B vaccine again.

Prevention of hepatitis B is very important. Generally, hepatitis B vaccine is a common method to prevent hepatitis B.

For the hepatitis B vaccine, three injections are required first to determine whether antibodies are produced. If no antibodies are produced, re-injection is required. Generally, the hepatitis B vaccine lasts for 3-5 years.

It is generally believed that the antibodies produced by vaccination can maintain immunity for 3-5 years, and a booster injection should be given later. However, it is best to test serum surface antibodies once a year after vaccination. If the surface antibodies turn negative or the level decreases, a booster injection should be given. The dose is 20-30 micrograms for adults and 10-20 micrograms for children.

The time interval between the 3 vaccination injections. The hepatitis B vaccine is given in three shots, the second shot one month after the first, and the third shot six months after the first.

Generally, the hepatitis B vaccine requires three injections over a period of half a year, and the injection order is 0.1.6 at three months.