Whether or not a bite requires an injection needs to be analyzed according to the specific circumstances of the biter. If the biter is a generally healthy person or a rabies patient, the injection is generally not required; if the biter is suffering from a contagious disease, such as hepatitis B, AIDS, etc., the injection is required. Usually, because bites from normal people are generally not infectious with viruses and bacteria, they do not need to be injected. Even if a person is bitten by a rabid person, there is generally no need for a shot because the virus contained in the saliva of a rabid person is extremely small and generally does not constitute an adult-to-human transmission, so a rabid person is not an infectious source of rabies. Rabies infectious source, the most common is the dog, followed by cats, pigs, cattle, horses and other domestic animals, need to pay attention to the above-mentioned animal bites, scratches, licking, or skin mucous membrane has broken, as well as by the above-mentioned animal saliva contaminated wounds, you need to wash the wound with water, and then disinfected with iodophor, but also appropriate amount of erythromycin ointment and other drugs, and rabies vaccination as soon as possible, preferably no more than 48 hours, to promote recovery The rabies vaccination should be given as soon as possible, preferably within 48 hours, to facilitate recovery. If the biter is suffering from infectious diseases, such as hepatitis B, AIDS, etc., as their saliva contains the corresponding virus, which can enter the body through the fracture, and then infect the bitten person, so you need to be vaccinated, such as hepatitis B immunoglobulin, or take AIDS-blocking drugs in time.