Rabies vaccination after a bite or scratch can greatly reduce the incidence of rabies, and the incidence can be reduced to very low, close to 0%, if the vaccine is given regularly and other treatments are done. Relevant information estimates that the incidence of rabies can be reduced to 1/80,000 in developed countries and perhaps 1/10,000-1/30,000 in developing countries, which is already a very low probability. Such a low incidence rate cannot be guaranteed if the rabies vaccine is not administered according to the prescribed process or if all five shots are not administered. In addition, rabies vaccination is only for secondary exposures. If there is significant bleeding that is a tertiary exposure, it is likely that rabies will not be prevented by not injecting rabies serum or immunoglobulin and only injecting rabies vaccine.