Rabies vaccination is recommended for dog bites as early as possible, as close as possible to 24 hours after exposure occurs. If not vaccinated in time, catch-up vaccination is also necessary 1 month after the exposure occurred. Since dogs are the main carriers of the rabies virus, when a human being is bitten by a dog, the rabies virus in the saliva may be contaminated through the dog’s saliva to the wound of the bitten person, which has the potential to cause rabies. Although not all dogs carry the virus in their bodies, in order to prevent adverse events, it is important to try to receive rabies vaccine and/or anti-rabies immune globulin within 24 hours after a suspected rabies exposure, regardless of whether the dog is healthy or not. If you fail to receive rabies vaccination in time, the incubation period of the rabies virus is about 1-3 months. One month after being bitten, you should also make up the rabies vaccine as early as possible, even though the prophylactic effect is less effective, it still has a role in preventing rabies.