The incubation period for rabies is the period from the time of the bite until the onset of symptoms. The incubation period for rabies is usually 2 to 3 weeks, and in rare cases it can be as long as several years; there is no definite figure for how long.
Influence on the length of the incubation period of rabies includes the amount and virulence of the virus that enters the body, the immune status of the bitten person, whether the bitten part is rich in nerve tissue and the distance between the bitten part and the central nervous system, generally the more viruses, the stronger the virulence, the more rich in nerves in the invaded part, the closer to the central nervous system, the shorter the incubation period is.
Rabies is caused by the rabies virus, clinical manifestations of fear of water, photophobia, spasm and convulsions, followed by local or systemic paralysis and death, after the onset of 100% mortality, so after being bitten by a dog must be the first time to go to the vaccine.