Normally, you don’t need an injection if you are scratched by a cat. Because the rabies virus is transmitted through bites, you will not be infected. You just need to clean the wound in time and disinfect it; but if the scratch is serious, you need to Go to the hospital for a tetanus shot. Generally, domestic cats are relatively clean and will not carry rabies virus. Wild cats and stray cats are more likely to carry rabies virus.