Hi , I have a question and I was wondering if someone can help??? I am doing a flu vaccine clinic, and I was asking one of the nurses with me, "what happens if a nurse does not asspirate the needle, and just gives the injection?" Also, what happens if the needle hits an artery, or nerve, and the vaccince was injectected? What will happen???" I never got any clear answer on this topic, I am very curious to know?? Does anyone have an answer??? Thank you!