Guinea pig bites usually require vaccination, such as hemorrhagic fever vaccine, tetanus antitoxin and so on. 1. Hemorrhagic fever vaccine: guinea pigs may carry hantavirus. When bitten by a guinea pig, you should first flush the wound with plenty of water or soapy water and go to the hospital as soon as possible to get a hemorrhagic fever vaccine. 2. Tetanus antitoxin: If the wound is deep and an anaerobic environment exists, tetanus antitoxin should also be injected to prevent tetanus bacillus infection. If the wound is deeper and larger, you should also take treatment measures such as debridement and suturing. There is an anaerobic environment, which may be infected with tetanus bacillus, and you need to actively inject tetanus antitoxin, or tetanus immunoglobulin.