It's been bugging me since I saw the first videos of people lined up for their Covid-19 vaccination --- the personnel giving the vaccinations are not aspirating before injecting. Why does this matter? Let me explain. Many if not most of the medications, and most if not all vaccines, are meant to be put into the body --- but not into the bloodstream. This can actually be a life-or-death issue, depending on what is being injected. I was taught way back when to always aspirate before injecting just to be 100% sure. This means pulling back on the syringe plunger...