After being bitten by a dog, you will be worried about the transmission of some diseases from the dog to the human, the most worried is rabies. The vast majority of human rabies is transmitted from dogs to humans, and rabies is a relatively serious disease, with a mortality rate of 100% after the onset of the disease. If the dog bite is not serious, only broken skin, no bleeding, belong to the second level of exposure, can only be injected rabies vaccine. If there is bleeding after the bite, it is a tertiary exposure, and rabies serum should be injected at the same time, or if rabies immunoglobulin is injected, it can be used instead of serum, but it is slightly more expensive. If the dog bite, there is not any breakage, and there is no obvious redness or swelling, and you do not feel any pain after applying alcohol to the bite site, it belongs to the first level of exposure, and there is no need to worry about the possibility of being infected with the disease in this case.