If you are scratched by a cat and bleed slightly, you need to squeeze out the blood immediately, then rinse the wound repeatedly with running water or soapy water for more than 15 minutes, and then apply iodine or alcohol for disinfection. If you are scratched by a domestic cat, you generally do not need a rabies vaccine. If you are scratched by a stray cat, it is best to take a pet hospital to get a rabies vaccine to avoid being infected with the rabies virus.