How long can rabies vaccine last?

If the rabies vaccine is fully vaccinated, the duration of the antibody level is usually about half a year. If the patient is bitten again within half a year, it is not necessary to re-inject, but if it is bitten again after more than half a year, it is necessary to re-immunize the whole process. In clinical practice, rabies vaccine is mainly injected to prevent rabies virus infection. The duration of the antibody is different according to the number of injections. Antibodies last about a year if three doses of rabies vaccine are given before exposure. Antibodies last longer if booster shots are given more than a year later. Antibodies last about five years if five doses are given after exposure.