When you find yourself with a wound, and this wound is determined to be a dog bite, but the wound is not to the extent that the skin is obviously broken, it is possible that you do not need an injection. Because there is no broken skin, it is likely to belong to the first level of exposure, but the first level of exposure must be absolutely no breakage, this time only through the naked eye, sometimes can not be 100% sure, so you can also apply 75% alcohol on the bite place, as long as the place is not visible to the naked eye broken skin, and there is no pain after the brush on the alcohol, it means there is no breakage The rabies virus cannot be transmitted through the skin of the person’s own body and thus lead to infection. However, if there is a slight pain in this location after brushing on the alcohol, it means that although the breakage is not visible to the naked eye, there is actually a small breakage, and the small breakage can go deeper into the skin slightly inside some locations, then there is a possibility of rabies infection, and it is necessary to get an injection, mainly rabies vaccination.