A person is not necessarily infected with rabies when bitten by a dog that has rabies. In the days when there was no post-exposure prophylaxis for rabies vaccine, the probability of a person getting rabies after a rabid dog bite was only 15-30%, and some sources put the probability at 15-20%, so this probability is still a long way from 100%, and it is not certain that a person will get rabies. At present, there are vaccines and rabies serum or immunoglobulin to prevent rabies, and the probability of getting rabies from a dog bite can be reduced to a very low level after immunization, which is the incidence of a rabid dog bite. If a wolf bite with rabies occurs, the incidence rate is somewhat higher, reaching 50%-60%. The incidence rate is also generally reduced to very low levels if appropriate and sound rabies prevention measures are used.