A scratch by a cat that is not bleeding may or may not require an injection. However, the shot that can be determined not to be needed is the rabies immunoglobulin or serum because there is no bleeding and it does not reach the level of level 3 exposure. It is possible that the shot that needs to be given is the rabies vaccine, because a scratch by a cat, if the skin is broken, reaches level two exposure. If the cat cannot be ruled out as carrying the rabies virus, a rabies vaccine is required to prevent a rabies attack. Cat scratches after just scratching clothes or scratching skin can not see any breakage, or even can not see any redness, similar to the primary exposure, do not need to be injected rabies vaccine. Even if the cat scratches are strong, if the cat has had two shots of rabies vaccine and has not been in contact with wild animals recently, it can be judged that the cat does not carry rabies virus and does not need rabies vaccination. If the cat scratches particularly deep, there is a risk of tetanus, you need to inject tetanus antitoxin.