Theoretically, rabies can be transmitted from person to person, but it is relatively rare in real life, which is related to the pathogenesis of rabies and the route of infection: In the pathogenesis of rabies, after the rabies virus invades the human body, it will first start to gradually infect the central nervous system along the nerves, i.e., the incubation period. Infected patients at this stage also do not show obvious symptoms and their saliva does not contain rabies virus, so general contact does not infect other people. When the rabies virus enters the central system and begins to multiply, the rabies patient begins to show symptoms such as muscle aches, abnormal sensation, photophobia, etc. The virus begins to enter the salivary glands and is distributed in the saliva. Generally if an exposed wound is licked by a person carrying the rabies virus, or if he or she is scratched or bitten, he or she is susceptible to rabies infection, but this behavior is relatively rare, and at this point the onset patient will be isolated when seeking medical attention and is unlikely to come into contact with others, so the chances of infecting others are relatively small. However, there may be a higher risk of transmission if organs, tissues, or corneas from a rabid person are transplanted to a healthy person. Currently the most common way for a rabies patient to contract rabies virus is by being bitten or scratched by an animal carrying the virus, such as a cat or dog, or by the saliva of an animal carrying the virus invading the body via an exposed wound and exposed skin mucosa.