If you are scratched by a cat and there is no bleeding, you do not need an injection. You only need to wash the wound carefully with running water and soapy water for about 15 minutes, and then apply iodine for disinfection. Rabies is generally transmitted through saliva and blood, so it is difficult to be infected by rabies if there is no bleeding from a cat scratch. This is especially true for cats raised at home. Generally, they will not be infected or carry the rabies virus if they do not go out.