If you are scratched again after six months of rabies vaccination, you should immediately rinse and disinfect the wound and have another rabies vaccination. After completing the full rabies vaccination, the protective antibodies in the body will gradually decrease with the passage of time, and usually the protection period is more than 3 months. If a person is scratched again six months after receiving rabies vaccination, the protective antibodies in the body may be on the low side. Therefore, after cleaning and disinfecting the wound, a booster vaccination of rabies vaccine is needed to increase the level of antibodies. If you are scratched or bitten again by an animal that may carry the rabies virus, such as a cat or dog, within three months after completing the full course of rabies vaccination. At this time, a high level of protective antibodies still exists in the body. In this case, there is no need to receive rabies vaccination again, and the wound only needs to be rinsed and sterilized.