The cat scratched and bled a little bit and needs to be vaccinated. This is because a cat scratch is likely to infect you with rabies, which by far has an almost 100 percent fatality rate. Therefore, to avoid rabies infection, it is important to get the rabies vaccine in a timely manner. The main source of rabies infection, in addition to dogs, is domestic animals such as cats, pigs, cattle, horses and some wild animals, which may also be infected and transmit rabies virus. Rabies is clinically classified into three exposure levels. Tertiary exposure means that there is a single or several skin bites or scratches from animals with bleeding wounds, at which point the patient has a higher chance of rabies infection and should be immediately vaccinated against rabies. Whereas a cat scratch with a little blood is a tertiary exposure, the patient should immediately flush the wound repeatedly with 20% soapy water, and if the wound is deeper require debridement of the wound with soapy water for continuous perfusion cleaning. Try to administer rabies vaccine within 24 hours to prevent infection. It is not recommended to bandage the wound after bleeding from a cat scratch, and antibacterial medication can be applied if the wound is infected. In addition, if the wound is deep, tetanus antitoxin injection is required if necessary.