How many years is hepatitis B vaccine valid?

summary

Now the best way to prevent hepatitis B is to vaccinate hepatitis B vaccine, and how many years is the validity period of hepatitis B vaccine, such a situation is not known by many people, according to my understanding, mainly the following situations.

How many years is hepatitis B vaccine valid?

Situation 1: 15 years after three injections of hepatitis B vaccine according to the prescribed procedure, 51% of the vaccinees still have antibodies to hepatitis B virus and are still resistant to hepatitis B virus. It is proved that half of the population vaccinated with hepatitis B vaccine can maintain immunity for at least 15 years.

Second, it does not mean that there is no need to re vaccinate hepatitis B vaccine within 15 years. After all, not everyone vaccinated with hepatitis B vaccine can be effective for more than ten years, some people vaccinated with hepatitis B vaccine antibody level is higher, then the validity of hepatitis B vaccine is longer; and some people vaccinated with hepatitis B vaccine, antibody level is lower, then the validity of hepatitis B vaccine is shorter.

Third, the positive conversion rate of hepatitis B virus surface antibody is more than 95% after inoculation of hepatitis B vaccine, and the effective protection period of hepatitis B vaccine is more than 5 years. The higher the antibody titer is, the stronger the immunity is, and the longer the effective period of hepatitis B vaccine is. There are also some people in the vaccination of hepatitis B vaccine, the body's antibody is particularly low, can not achieve the effect of prevention, such a situation needs to be replanted.

matters needing attention

In the vaccination of hepatitis B vaccine must go to the regular large specialized hospital, in order to prevent vaccination expired vaccine.