The incubation period of human rabies varies from 1-3 months after injury and infection, with the shortest being 10 days -2 months and the longest being 1 year. Individual cases have been reported for more than 5- 10 years, and it is rare for more than 10 years.

The incubation period of rabies depends on the location and severity of the injured person. Because rabies virus can invade the injured person's skin and mucous membrane, it takes a certain time to reach the central nervous system, so the incubation period is short and long when the head, face, neck and other body parts are close to the central nervous system. Multiple injuries, deep injuries or severe skin injuries have a short incubation period.