If the cat that scratched a person moves strangely, is aggressive, afraid of light and water, it should be vaccinated promptly after being scratched, otherwise it will contract rabies. Rabies incubation period is 1-3 months, up to several years, once the onset of the disease without drugs, most will die of respiratory failure, the mortality rate is close to 100%, if the scratch is deep, bleeding a lot of need to play tetanus injection, especially by wild cats scratch, otherwise you will suffer from tetanus. The incubation period of tetanus is very short, usually about 7 days, the onset of the disease is not promptly treated the death rate is very high. Rabies is caused by a viral infection. Pet cats, especially caged cats or cats that never go out, basically do not carry rabies, and if the wound is shallow after being scratched, you can disinfect it with iodophor and smear it with erythromycin ointment.