Having had a rabies vaccination does not lead to a lifetime of immunity. Because after the full rabies vaccination, after a period of three years, you are bitten again, you need the full rabies vaccination, which means that after three years, the neutralizing antibodies produced by the body by the rabies vaccine will generally drop to a relatively low level, so you need the full rabies vaccination again. However, within three years, the previous rabies vaccine still has a certain effect, so in the case of three years, it is generally not necessary to inject rabies vaccine again, and it is possible that only a booster injection is needed, not a full injection. So the rabies vaccine is not something that can make a person immune for life.