There is no bleeding but there are some scratches from the dog scratch. Do I need an injection?

What to do if a dog scratches without bleeding but has scratches
Even if the scratched area is not broken to the naked eye, it does not prove that the skin is intact, because many small wounds are invisible to the naked eye. Bacteria are likely to invade the human body through these minor wounds and may lead to tetanus infection. Therefore, after being scratched, even if there is no wound, it is necessary to wash it with soapy water for about 15 minutes, and then use alcohol and iodine to disinfect it alternately for 2-3 days. Second-rate.Do I need an injection?
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